Camaro LT5

[JD67SS]

Matt is more than capable and does build cars without my daily interaction. On my stuff I know how I want it. We work and communicate very well. Sometimes we do it my way and often he has a better idea and we do it his way. In all the projects we have done together I can only think of a couple items that had to be scrapped because it did not work out. Early on Matt like to make things “street roddy”. I like think functional and OE looking. He nails that. Look at my Blazer and Lillard’s S15. Looks like a prototype GM build. Killer work and attention to detail.

Matt thinks thought the whole build. He and his guys are very talented. Usually project creep comes from me.

So to answer your question, yes I communicate with Matt daily because I’m a control freak. Does he need me to nope.


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Thanks for your honest and straight forward answer. It helps tremendously.
Sled Alley is on my short list.

JD

[jmac]

What gas pedal are you using with the Modo Innovations plate?

Did you see they now have matching pedals for the brake and clutch? Very cool, thought of your car when I saw them.

John

[Stielow]

What gas pedal are you using with the Modo Innovations plate?

Did you see they now have matching pedals for the brake and clutch? Very cool, thought of your car when I saw them.

John


I’m using the Gas pedal that comes with the GM crate engine harness. It was used in the first generation Cadillac CTS.

To get an OE look I use this brake and clutch pedal covers off a Solstice.

https://uploads.tapatalk-cdn.com/20200323/9e2f519ed169203d457201830d5f768e.jpg


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[DKz Garage]

Mark.... did you have to do any mods to the firewall in order to clear the high pressure fuel pump? Putting an LT4 in my 69 Camaro, DSE Sub, using the Holley motor and trans mounts. I know you developed these for Holley. Any input would be appreciated.

[JON Q]

Mark.... did you have to do any mods to the firewall in order to clear the high pressure fuel pump? Putting an LT4 in my 69 Camaro, DSE Sub, using the Holley motor and trans mounts. I know you developed these for Holley. Any input would be appreciated.

Mark explains the firewall mod on page 10

[jmac]

Mark explains the firewall mod on page 10


If you could, for everyone's future reference, refer to the post # at the top right hand side of the post.

Everyone's settings are different, for me, this thread is only at 9 pages...

Thanks!

[Jimmy Sean]

Mark explains the firewall mod on page 10

If you could, for everyone's future reference, refer to the post # at the top right hand side of the post.

Everyone's settings are different, for me, this thread is only at 9 pages...

Thanks!

Mark.... did you have to do any mods to the firewall in order to clear the high pressure fuel pump? Putting an LT4 in my 69 Camaro, DSE Sub, using the Holley motor and trans mounts. I know you developed these for Holley. Any input would be appreciated.

The post in question is #94

[CamaroAJ]

https://lateral-g.net/forums/showpost.php?p=699529&postcount=94

You can copy the link from the post number as well.

[cwylie]

I’m using the Gas pedal that comes with the GM crate engine harness. It was used in the first generation Cadillac CTS.

To get an OE look I use this brake and clutch pedal covers off a Solstice.

https://uploads.tapatalk-cdn.com/20200323/9e2f519ed169203d457201830d5f768e.jpg


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Do those fit the factory brake and clutch pedals?

[Stielow]

Do those fit the factory brake and clutch pedals?


After some trimming


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[garickman]

After some trimming


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Have you seen these? Matching brake and clutch pedal as well as the emergency brake. These are for LS swaps.

https://lateral-g.net/forums/showthread.php?t=58361

[130fe]

After some trimming


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Mark, i assume you had to trim the metal from the pedals? How did you secure the newer style covers to the original style pedals? Any info would be appreciated!

[Stielow]

Mark, i assume you had to trim the metal from the pedals? How did you secure the newer style covers to the original style pedals? Any info would be appreciated!


Yes trim down the steel 69 Camaro pedals. They install like the stock rubber pads. I usually glue them on also.

I’ve used them on my last 6 projects. Seems to work.

Mark


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[Stielow]

Some updates. I’ve never done this but Alex tucked and smithed the rear bumper. Looks great. The car was missing the rear bumper so we purchased a repo and fixed it.

https://uploads.tapatalk-cdn.com/20200329/e956b8d58e32835f08a5f72b749a39ad.jpg

https://uploads.tapatalk-cdn.com/20200329/5b6539f789dbcf30a9280169b2b3dfaa.jpg
https://uploads.tapatalk-cdn.com/20200329/9b0048eeab1883a24a1dc3746f045ad7.jpg
https://uploads.tapatalk-cdn.com/20200329/224642ebcc1cebfe4955e8709912c3d5.jpg
https://uploads.tapatalk-cdn.com/20200329/bfb4ab0072f623cd3055b49678157d18.jpg


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[Stielow]

Because the LT5 needs 2 intercooler pumps we needed to sort out the plumbing. The plan was always two 3/4 inch lines teed into a one inch line. To clean up the plumping we hard lined a lot of the one in lines. This required some 3/4 to 1 inch Y fittings. When you can’t find what you want make it.

https://uploads.tapatalk-cdn.com/20200329/e290e3947529c05e86c88e9836277d28.jpg
https://uploads.tapatalk-cdn.com/20200329/e9040e6c5348d3c940f484e465d173b7.jpg
https://uploads.tapatalk-cdn.com/20200329/f7455d0a6c39aa0a4b34105351c1b320.jpg
https://uploads.tapatalk-cdn.com/20200329/4e12d93cfffc606222925067de7ad5ed.jpg
https://uploads.tapatalk-cdn.com/20200329/ed2236ebf435919c8a55387f5025d541.jpg


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[Stielow]

Because a lot of track events want tow hooks we integrated one into the front bumper bracket.

https://uploads.tapatalk-cdn.com/20200329/2e4d4c9e936f9d27324687de77e88c18.jpg
https://uploads.tapatalk-cdn.com/20200329/87cdf5e4058b7b2d5c126ab2980e2a30.jpg
https://uploads.tapatalk-cdn.com/20200329/5f83dd5372296dc454e80e50e6d6c63e.jpg
https://uploads.tapatalk-cdn.com/20200329/1ae323d2f24b3cd2ba4c5df3a87ded45.jpg


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[Stielow]

We put the car on the ground to check tire clearances. Everyone always asks me about wheel widths and backspacing. It takes a lot of work and finesse to get a good tire wheel package. Every car is a little different and they are all tweeted to fit.

https://uploads.tapatalk-cdn.com/20200329/c64ab5790fd405de6b6ce6d0a0b2c520.jpg
https://uploads.tapatalk-cdn.com/20200329/619ef2959d1ae803ddc1bb00c111de5f.jpg
https://uploads.tapatalk-cdn.com/20200329/a45a3dfc05c3d1983149df9f881ef06d.jpg
https://uploads.tapatalk-cdn.com/20200329/ffe18f01d9e4b942a6b026c24a3102ec.jpg


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[Stielow]

Up next week is exhaust. Because Holley make a kit now hopefully it will go quick. But like everything on these car I wanted to modify the “off the shelf” system.

Holley did some one off mufflers to knock down the sound pressure.

https://uploads.tapatalk-cdn.com/20200329/c37216cdb433afd151ba05693c3c191a.jpg
https://uploads.tapatalk-cdn.com/20200329/fb665c495d816f570b32d9e76d261e31.jpg


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[Stielow]

Aaron Oberle helped me design and manufacture a gauge bezel to fit a one off Dakota Digital gauge set up.

I’m excited about this should be very cool!

https://uploads.tapatalk-cdn.com/20200329/26db16811d5fe0a78097b5a763581218.jpg


https://uploads.tapatalk-cdn.com/20200329/ef6e97bcea7dbaf50b452be746fbe09c.jpg
https://uploads.tapatalk-cdn.com/20200329/6b02aea91ce0dbc08a096576f14d9a9d.jpg
https://uploads.tapatalk-cdn.com/20200329/1a58b4f86203693ebd31fe8a08b2088c.jpg
https://uploads.tapatalk-cdn.com/20200329/008b2a98c4aff333cc8d993d0aeaf211.jpg
https://uploads.tapatalk-cdn.com/20200329/ac367efdafb4772fac6d9217c7840712.jpg
https://uploads.tapatalk-cdn.com/20200329/8bdbafe41a232d8bd546713f42975115.jpg


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[214Chevy]

Man, everything looks so good. But, that's nothing new here. Once we see you start a new build Mark...we all know we're in for a treat. I like how you're adding a few custom touches on this one. :king:

[RdHuggr68]

Mark, I was looking at the Dorman clutch master cylinder CM350014 on Summit's web page and they state that it is plastic, on page 11 yours is aluminum. Am I looking up the wrong one? Thanks

[JD67SS]

Aaron Oberle helped me design and manufacture a gauge bezel to fit a one off Dakota Digital gauge set up.

I’m excited about this should be very cool!



Cool is an understatement, but I don’t have a word to describe what I’m seeing with this build.

JD

[randy]

What size did you go with? I was wondering what type of gains should come from a 2.5 to 3” exhaust

Up next week is exhaust. Because Holley make a kit now hopefully it will go quick. But like everything on these car I wanted to modify the “off the shelf” system.

Holley did some one off mufflers to knock down the sound pressure.

https://uploads.tapatalk-cdn.com/20200329/c37216cdb433afd151ba05693c3c191a.jpg


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[Stielow]

Mark, I was looking at the Dorman clutch master cylinder CM350014 on Summit's web page and they state that it is plastic, on page 11 yours is aluminum. Am I looking up the wrong one? Thanks


Manufacturers change their suppliers all the time. When I ordered it was aluminum. Maybe they changed it or the description is wrong. Dorman is most likely concerned with function.


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[Stielow]

What size did you go with? I was wondering what type of gains should come from a 2.5 to 3” exhaust


This car is full 3 inch exhaust. Supercharger cars are less sensitive to exhaust back pressure than a N/A or turbo car. On Charlie’s Riv we did full 2.5. Not exactly sure how much power we lost if any when we did that. I have not had a chance to dyno a direct 2.5 vs 3. I do know these engine move around 1600 CFM of air at full power! My cars will put so much heat into the exhaust the pipes are almost purple to the tips. So it gets very hot and grows 3/4 of an inch.

I’m doing a 3 inch so the system will live on track.

The reason I’m going to bigger mufflers that the system on Gunner with a stock LT4 it would not meet the sound requirements at our local track Waterford. So bumping the power from 700ish to 900ish I’m sure I’ll need more sound control.

I’ll bet this car will not meet sound also. But they do not measure on practice days!

On a side note my neighbor could hear Jackass 2.0 on the highway at WOT 3 miles away. LOL. These cars are loud at WOT.


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[randy]

When I first built my car i wanted the noise. Now I want to quiet it down yet feed it more power. Debating on upgrading to a 3” if I can add more power but it has to be quiet. Another big problem of mine is how low my car is and I’m just thinking if I want to deal with the head ache for some small gains. On a sbe ls3 heartbeat setup my car made 707rwhp and 606tq using a stage 2 na cam.

[jmac]

Awesome. I love the small attention to detail that you're doing. It's the little things that add up and really make the car stand out.

Bumper looks great, far better fitment than stock for sure!

Love the slick integration of the front tow hook. Looks like it's a threaded boss and you can just remove it when not tracking it?

As always, thanks for sharing!

[CWesB]

RdHuggr68

I saw the same thing on the Summit site when I was looking for my new master cylinder.

I looked it up on Amazon and it was described as having an aluminum body. Like Mark says, I think it is an error in the Summit description. However, I ordered mine from Amazon just in case.

Also, I had trouble finding 5/16" OD tubing here locally. I wound up ordering a piece of 316 stainless, 0.065" wall tubing 1' long from McMaster- Carr (PN 89495K405)

I've got all my parts on hand. Will swap out the pedals and master cylinder next week since we are in Covid 19 time out.

Hope this helps.

Wes

[RdHuggr68]

RdHuggr68

I saw the same thing on the Summit site when I was looking for my new master cylinder.

I looked it up on Amazon and it was described as having an aluminum body. Like Mark says, I think it is an error in the Summit description. However, I ordered mine from Amazon just in case.

Also, I had trouble finding 5/16" OD tubing here locally. I wound up ordering a piece of 316 stainless, 0.065" wall tubing 1' long from McMaster- Carr (PN 89495K405)

I've got all my parts on hand. Will swap out the pedals and master cylinder next week since we are in Covid 19 time out.

Hope this helps.

Wes Thanks for the info Wes, I am calling the tech line at Dorman tomorrow to find out what they are now using for material on the master cylinder.

[CarlC]

I purchased to Dorman part several months ago and it is aluminum.

The Wagner replacement part is made by AP, so in either case they are pretty good parts. Rockauto had both.

The Camaro has a 3" system exiting at a 45* angle backward just behind the rear tires. 17" Magnaflow mufflers is like stuffing 11# in a 10# hole. During idle and cruise it's quite nice but at WOT it makes all kinds of noise. With the Magnaflow being an absorbsion type it tends to get louder over time as the supercharger is tough on them.

[jmac]

I bought my Dorman MC off Amazon and it was aluminum.

Mark,

When you have a chance, could you please post some pics of your roll bar install? From what I see in past pictures, looks like you have a removable harness bar, and the down bars go through to the trunk have smaller off shoots that tie in to the shock cross member. Do those happen to line up with the top of the coil over shocks? Could you provide any insight to your thought process and design of it? Plan on running door bars?

Thanks as always!

John

[RdHuggr68]

I called Dorman tech dept. today and gave him the part # listed by Mark and they told me that it is plastic and has been plastic for at least 7 years. Not sure what to think. :hairpullout:

[RdHuggr68]

RdHuggr68

I saw the same thing on the Summit site when I was looking for my new master cylinder.

I looked it up on Amazon and it was described as having an aluminum body. Like Mark says, I think it is an error in the Summit description. However, I ordered mine from Amazon just in case.

Also, I had trouble finding 5/16" OD tubing here locally. I wound up ordering a piece of 316 stainless, 0.065" wall tubing 1' long from McMaster- Carr (PN 89495K405)

I've got all my parts on hand. Will swap out the pedals and master cylinder next week since we are in Covid 19 time out.

Hope this helps.

Wes

I just looked on Amazon, no description on what made of. :waveflag:

[clill]

Amazon has a great return policy so if a plastic one shows up you could probably just send it back.

[CWesB]

That’s why I ordered mine from Amazon, free shipping and return policy.

I didn’t have a big enough order to get free shipping from Summit at that time.

I got mine in early February and it has an aluminum body. I’ve already removed the crimped on factory connection and it is threaded just like Mark described.

I was hesitant when I ordered mine also. I figured if it wasn’t metal I would return it and try again from somewhere else.

Wes

[Stielow]

A trick I have done to a lot of my Camaros. A Caprice license plate holder flips down and cams over. Make it easier to fuel up.

https://uploads.tapatalk-cdn.com/20200404/dea0d5b6f913ea7edca17124157b0e8a.jpg
https://uploads.tapatalk-cdn.com/20200404/d484c6cff750fd78bcf58987021f9b12.jpg
https://uploads.tapatalk-cdn.com/20200404/c74431743bbc2e8303f224f11cb399c6.jpg


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[Stielow]

Sled Alley is working the exhaust. The reason we are building before we paint is so we can modify things if we need to.

This cars are always hard to get the 3 inch exhaust over the rear axle.

On this car we cut into the body to allow the exhaust over the axle to go higher up.

The photos are of the car at full jounce.

https://uploads.tapatalk-cdn.com/20200404/9aa777e3be3363d7ab3fed69437e52d5.jpg
https://uploads.tapatalk-cdn.com/20200404/37866505602fe8b441da8f99da79fc30.jpg
https://uploads.tapatalk-cdn.com/20200404/7402afc3020cc3ac36663b1ff8dbb62c.jpg
https://uploads.tapatalk-cdn.com/20200404/664731c972ca2b2dd50fd685b16ad084.jpg
https://uploads.tapatalk-cdn.com/20200404/ca3703fb7fbcda8688e3b160679e1408.jpg

https://uploads.tapatalk-cdn.com/20200404/49dafa0d36b90435b3dea6dbec7fe356.jpg


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[Stielow]

Another touch is adding tie down points to the DSE subframe. Makes it easier to tie it down in the trailer.

https://uploads.tapatalk-cdn.com/20200404/39dc0ff0f740f4b60def0eb7bd2fea5f.jpg
https://uploads.tapatalk-cdn.com/20200404/13e457e61384fe3039194f6450a39973.jpg
https://uploads.tapatalk-cdn.com/20200404/47c5410db61a5d2da0c5047edc139209.jpg


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[raustinss]

What year caprice Mark ? .... ps this is why I hate you lol you know all the perfect factory parts to use lol

[Stielow]

What year caprice Mark ? .... ps this is why I hate you lol you know all the perfect factory parts to use lol


Around 1991


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[WSSix]

Nice work on the exhaust. Are those made mufflers or bought? The welds make it look custom made.

[WILWAXU]

Nice work on the exhaust. Are those made mufflers or bought? The welds make it look custom made.

Up next week is exhaust. Because Holley make a kit now hopefully it will go quick. But like everything on these car I wanted to modify the “off the shelf” system.

Holley did some one off mufflers to knock down the sound pressure.

https://lateral-g.net/forums/showpost.php?p=701933&postcount=268

[jmac]

Thanks for the update!
Have more questions for you, I know, I'm that annoying kid in class that asks all the questions :y0!:

What are the tabs/brackets circled below?

https://i.hmjimg.com/images/2020/04/05/542A437C-46B3-4298-BE1D-1F237D76F3D0.jpg

https://i.hmjimg.com/images/2020/04/05/95D1378F-907D-4974-9578-5EACEBCB5ABB.jpg

We know you and most everybody makes those trunk notches in order to route the exhaust up over the rear, but in this one pic, it looks like there's a section taken out from the rear seat area. What was that for?

https://i.hmjimg.com/images/2020/04/05/395F3C39-6C0B-4E79-8BB5-49A2B704228D.jpg

As always, thanks for sharing and your time!

[Stielow]

Thanks for the update!
Have more questions for you, I know, I'm that annoying kid in class that asks all the questions :y0!:

What are the tabs/brackets circled below?

https://i.hmjimg.com/images/2020/04/05/542A437C-46B3-4298-BE1D-1F237D76F3D0.jpg

https://i.hmjimg.com/images/2020/04/05/95D1378F-907D-4974-9578-5EACEBCB5ABB.jpg

We know you and most everybody makes those trunk notches in order to route the exhaust up over the rear, but in this one pic, it looks like there's a section taken out from the rear seat area. What was that for?

https://i.hmjimg.com/images/2020/04/05/395F3C39-6C0B-4E79-8BB5-49A2B704228D.jpg

As always, thanks for sharing and your time!


The holes in the top photo are pass throughs for the diff vent, fuel tank vent Two Much Canisters. Also a pass through for wiring.

The tab in the middle photo is the pickup point for a brace brace that reinforces the pan hard rod. I’ve added this to my last 4 build to stiffen up the DSE bracket.

The last photo is the clearance hole we cut into the floor pan for exhaust clearance. We will fill patch it once the exhaust is done. It gave us a ton of extra room for the 3 inch pipe to go over the axle.


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[67_camaroRS]

Some random build photos.

https://uploads.tapatalk-cdn.com/20200306/469876d4e6389ac10f7e4082c3236314.jpghttps://uploads.tapatalk-cdn.com/20200306/606c0a7a4c0bb55715e61b1a8d0b2404.jpghttps://uploads.tapatalk-cdn.com/20200306/3aad2e5bb2b9c5a5c8cfdaa2ecf83986.jpghttps://uploads.tapatalk-cdn.com/20200306/e2fc8bf456c086c64acae8a38b65b090.jpghttps://uploads.tapatalk-cdn.com/20200306/476c4f45f91d0adf5c9e92b17902124d.jpghttps://uploads.tapatalk-cdn.com/20200306/18957b5b79a196970896cc06e24e6387.jpghttps://uploads.tapatalk-cdn.com/20200306/beb9134d7fe0800c7fa9302875a4a88e.jpghttps://uploads.tapatalk-cdn.com/20200306/b0db291b760cdc92925230f85f0a370a.jpg


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Hey mark, what Master Cylinder, Brake Booster and proportioning system are you using on this car? Thanks

[Stielow]

Hey mark, what Master Cylinder, Brake Booster and proportioning system are you using on this car? Thanks


The Detroit Speed booster and master. Prop valve Willwood off memory.


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[CamaroAJ]

The Detroit Speed booster and master. Prop valve Willwood off memory.


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If you’re running ABS why are you using a prop valve? I’ve seen it on a few of your builds and with the C5 ABS I have for my car I know it controls bias. Is it just a back up fail safe you’re using it for?

[Stielow]

If you’re running ABS why are you using a prop valve? I’ve seen it on a few of your builds and with the C5 ABS I have for my car I know it controls bias. Is it just a back up fail safe you’re using it for?


Yes I balance the system with ABS turned off then turn on the ABS. Yes it is an event of ABS system fault. Not likely but give me a piece of mind.


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[CamaroAJ]

Yes I balance the system with ABS turned off then turn on the ABS. Yes it is an event of ABS system fault. Not likely but give me a piece of mind.


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Good information. Does having the prop valve in it set to balance the car with the ABS off mess with the balance when the ABS is turned back on?

[raustinss]

Anyone want to bet Mark's brain is running overtime with this quarantine thing ... off work, isolation,... coming up with his next great part, mod, build ,trend

[Stielow]

Anyone want to bet Mark's brain is running overtime with this quarantine thing ... off work, isolation,... coming up with his next great part, mod, build ,trend


Not hardly. Binge watching TV show with my wife and the dogs.... oh and I cleaned the shop.


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[Stielow]

Sled Alley finished the exhaust looks great.

https://uploads.tapatalk-cdn.com/20200407/9397a708f7e6669db18b84a3e5dc0bcd.jpg
https://uploads.tapatalk-cdn.com/20200407/2e6bb9e6e9b3257983e7b8c13d511417.jpg


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[jmac]

Not hardly. Binge watching TV show with my wife and the dogs.... oh and I cleaned the shop.


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Have anything cool to sell? :lol:

[jmac]

Exhaust looks great, nice clean exit. It's exactly how I'd like mine to be.

No resonators on this one? Hoping the new mufflers will do the trick?

[Stielow]

Exhaust looks great, nice clean exit. It's exactly how I'd like mine to be.

No resonators on this one? Hoping the new mufflers will do the trick?


Yes hope the mufflers are enough. If it too loud we can add mufflers.

Thanks this exhaust system is the best system I have ever had done.


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[jeff71]

Hey Mark,

I just wanted to confirm the exhaust is the “kit” available from Holley except the mufflers which are the Proto types.

Thanks

[mikels]

My cars will put so much heat into the exhaust the pipes are almost purple to the tips. So it gets very hot and grows 3/4 of an inch.



Yup - they get hot.....

[Stielow]

Hey Mark,

I just wanted to confirm the exhaust is the “kit” available from Holley except the mufflers which are the Proto types.

Thanks


This is the “kit” modified a lot to allow the bigger mufflers.

The standard Holley system fits nice and works well. I just want my car a bit quieter.


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[Stielow]

Thanks for the update!
Have more questions for you, I know, I'm that annoying kid in class that asks all the questions :y0!:

What are the tabs/brackets circled below?

https://i.hmjimg.com/images/2020/04/05/542A437C-46B3-4298-BE1D-1F237D76F3D0.jpg

https://i.hmjimg.com/images/2020/04/05/95D1378F-907D-4974-9578-5EACEBCB5ABB.jpg

We know you and most everybody makes those trunk notches in order to route the exhaust up over the rear, but in this one pic, it looks like there's a section taken out from the rear seat area. What was that for?

https://i.hmjimg.com/images/2020/04/05/395F3C39-6C0B-4E79-8BB5-49A2B704228D.jpg

As always, thanks for sharing and your time!


A couple photos of the pockets in the floor pan to clear the kick ups over the rear axle.

https://uploads.tapatalk-cdn.com/20200407/a3862330062bc6a7c294e994b437bae9.jpg
https://uploads.tapatalk-cdn.com/20200407/5cca8f4479bf4a64f8c63a17d2ead578.jpg
https://uploads.tapatalk-cdn.com/20200407/74e20497414bff8df1166b227b10dba4.jpg


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[jmac]

Awesome. Thanks for the follow up pictures.

I can now see clearly those other holes on the left, they go through to the trunk for your vents and wiring.

I'd like to see how that other bracket works to strengthen the panhard bar mount if you have pics of that complete.

Thanks!

[jmac]

Yup - they get hot.....

Is that your "burble" tune Dave? :lmao:

[mikels]

Is that your "burble" tune Dave? :lmao:

Nothing intentional! Just over-run - happens when fueling changes rapidly such as going from deep throttle to lift-foot (or clutch-fuel cutoff) - excess fuel continues combustion into the exhaust system. Sometimes (like this photo) mixture in exhaust is too rich to burn until it reaches outside air and then has enough oxygen to burn. Kills mosquitoes as a side benefit....

I have tinkered with the calibration on how enters fuel-cut (either decel or clutch) - as well as rate of change of targeted fuel ratio and spark timing during these events to minimize burble - but can only do so much when going from ~800-900g/sec airflow to ~50-100g/sec in short order.

Makes cool photos though!

Dave

[Stielow]

Nothing intentional! Just over-run - happens when fueling changes rapidly such as going from deep throttle to lift-foot (or clutch-fuel cutoff) - excess fuel continues combustion into the exhaust system. Sometimes (like this photo) mixture in exhaust is too rich to burn until it reaches outside air and then has enough oxygen to burn. Kills mosquitoes as a side benefit....

I have tinkered with the calibration on how enters fuel-cut (either decel or clutch) - as well as rate of change of targeted fuel ratio and spark timing during these events to minimize burble - but can only do so much when going from ~800-900g/sec airflow to ~50-100g/sec in short order.

Makes cool photos though!

Dave


It does make cool photos...https://uploads.tapatalk-cdn.com/20200408/52505ec7cc725502d9f51fd878d4f755.jpg


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[raustinss]

So do the red rotors , asking for mercy lol

[Stielow]

One this build we are using two intercooler pumps. To clean up the plumping we joined the two 3/4 inch lines into a 1 inch hose. We then hard lined part of it

https://uploads.tapatalk-cdn.com/20200409/3cefb3f4611ddc70393802a6783de7fc.jpg

https://uploads.tapatalk-cdn.com/20200409/ebb02966d5edc15c60d77067e299c339.jpg

https://uploads.tapatalk-cdn.com/20200409/204d9684a815bccc45f82281adcce44d.jpg

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https://uploads.tapatalk-cdn.com/20200409/635957ab94b2d03d04d99c19bbfc44e4.jpg

[Stielow]

Today we drilled the holes to mount the fender emblems. Aaron nailed it! The curvature is dead on.

https://uploads.tapatalk-cdn.com/20200409/e62c8ee4e96149b4f3316a995245fc91.jpg
https://uploads.tapatalk-cdn.com/20200409/03df15c4ac58d79fc1a2d334f6154887.jpg
https://uploads.tapatalk-cdn.com/20200409/ece5ac122e531e1326adf4559e0b848d.jpg


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[Stielow]

Small details like a solid Battery disconnection is nice. We started doing this on the last few builds and I like the switch better than the battery mounted ones.

https://uploads.tapatalk-cdn.com/20200409/5853f579fa1c07d66a33f2cd6b9adf36.jpg


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[Stielow]

The fuel controllers are mounted in the trunk. Also a little fuse block for them. The GM instructions for the LT5 said it just needs one fuel pump. My math shows it needs two. So the GM fuel pump controller will run one pump and then a VaporWorx will run the 2nd pump. This keep the crate controller ECM happy. The stock GM fuel control module will not carry enough current to control two pumps.

https://uploads.tapatalk-cdn.com/20200409/354b88d0e8a837eb4d93acbdabc2fef6.jpg


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[Stielow]

Optima / Detroit Speed Battery Mount

https://uploads.tapatalk-cdn.com/20200409/f94f484c5e2a313933e3521addcf0054.jpg


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[Stielow]

Two Much Fuel and Diff vents. The holes in the DSE rear crossmember are for the -6 AN bulkhead fittings.

https://uploads.tapatalk-cdn.com/20200409/2baf40f11c36c9976ae765207bb05d94.jpg
https://uploads.tapatalk-cdn.com/20200409/a3e85fce60a4a8ef569a54f4cb2f0ea5.jpg


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[Stielow]

We added shoulder belt guides to the roll bar cross bar. On track I don’t like these moving around on the bar.

https://uploads.tapatalk-cdn.com/20200409/5d8ec63847758e2290d30941dd27d936.jpg


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[Operations]

Banged read this thread today, love the build

Hope to see you and this beauty at COTA soon

Mike P.

[CarlC]

The fuel controllers are mounted in the trunk. Also a little fuse block for them. The GM instructions for the LT5 said it just needs one fuel pump. My math shows it needs two. So the GM fuel pump controller will run one pump and then a VaporWorx will run the 2nd pump. This keep the crate controller ECM happy. The stock GM fuel control module will not carry enough current to control two pumps.

https://uploads.tapatalk-cdn.com/20200409/354b88d0e8a837eb4d93acbdabc2fef6.jpg


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Maybe they are using that new math being taught in school nowadays..... ;-)

[Stielow]

Maybe they are using that new math being taught in school nowadays..... ;-)


It is that magic BSFC the kids are using now...

Since I started using VapowWorx my fuel issues have gone away. Thanks Carl for all the advice! [emoji57]


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[69pro-touring]

Around 1991


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I've never thought of this but the 69 Camaro bracket always bothers me when filling up. I'm going to have to steal the bracket off of my 96 SS and see if it fits, I don't remember seeing that one in your book but you learn something new everyday; thanks for all the good ideas!

[Stielow]

I've never thought of this but the 69 Camaro bracket always bothers me when filling up. I'm going to have to steal the bracket off of my 96 SS and see if it fits, I don't remember seeing that one in your book but you learn something new everyday; thanks for all the good ideas!


https://www.ebay.com/itm/CAPRICE-CLASSIC-LICENCE-PLATE-FRAME-GAS-FILLER-DOOR-GM-/130098906949

FYI


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[cwylie]

Does it mount in the factory holes?

https://www.ebay.com/itm/CAPRICE-CLASSIC-LICENCE-PLATE-FRAME-GAS-FILLER-DOOR-GM-/130098906949

FYI


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[Stielow]

Does it mount in the factory holes?

No it does not. I have made adaptor brackets on past build.

[jmac]

Hey Mark,

Could you tell us a little more about your cooling setup?
What kind of radiator?
Fan or fans?
Water to air heat exchanger for the super charger?
Oil cooler, oil to air or built in to radiator?
Power steering cooler?

I know you installed that rear diff cooler and ran the hard lines up front. Where do they connect to?

Real interested to hear how you've managed to package all these systems in to your car.

Thanks!

[Stielow]

Hey Mark,



Could you tell us a little more about your cooling setup?

What kind of radiator?

Fan or fans?

Water to air heat exchanger for the super charger?

Oil cooler, oil to air or built in to radiator?

Power steering cooler?



I know you installed that rear diff cooler and ran the hard lines up front. Where do they connect to?



Real interested to hear how you've managed to package all these systems in to your car.



Thanks!



https://uploads.tapatalk-cdn.com/20200417/2d06df4c4b0fefaa7239283d79f91d58.jpg


Hot Rod cooling. Fun topic. First off I want to give a disclaimer…..this is what worked for me.



Also 90% of people do not need to harden their cars this much because you don’t beat on them as hard as I do. Many times I’m asked to take someones car out on the track to see what it will do and I over temp their car. Even if the owners never had an issue. I brake, corner and accelerate harder than most people. Ask my buddy Gordon. Oh he won’t let me drive his stuff anymore.



A car has two parts to it, track capability and track durability. Capability is lap time, maybe one lap. Durability is how long it can do it. At work we run test called “Tanks full of fuel”. We fill the car all the way up and run it flat out on a race track until the fuel runs out. We do these back to back. A vehicle with usually thermally stabilize after the 2nd tank fulls of fuel.



Most of us that take our cars to open track days run 20 minute sessions. These are usually about 40 minutes apart. So not as hard on stuff as what we test at work. If you just AutoX you will most likely not have any issues other than power steering cooling. Make sure for whatever you do make sure the power steering cooler is big enough. I now just use a oil to water transmission cooler built into the rad. C&R talked me into a smaller one on Jackass and I killer 4 power steering pumps before I went to a bigger cooler.



I have been fighting cooling issues for years. Most aftermarket products were designed to cool vehicle that cruise around or do occasional drag racing.



With the growth of Pro-Touring track events over the last 15 years the need to cool these cars has become apparent. I was an anomaly back in the ‘90 going to open track days and doing One Lap of America. When I rolled up to tech Brock Yates was amazed. He was correct, we did not finish and we did catch on fire! I learned a lot on One Lap.



As a little background on how I sorted some of this out. I was fortunate that my day job was developing high performance vehicles for GM at about the same time my Camaro started to get real fast. We would take a “Street” car to the race track and we would have all kinds of cooling issues.



It was during this time frame I came to understand not all cooling parts are created equal. Most of your “Hot Rod” radiator companies use cooling technology from the 70s. Have you hear the term “I have a 2 core radiator in this”. The OE to save mass, cost and add fuel economy have worked with suppliers to develop higher efficiency cores. (Heat rejection per square inch). The OEs are always attempting to balance the mass flow of air around and trough the vehicle. Cooling needs mass flow of air. But the more air you jam into the radiator and brake cooling duct the more the drag goes up. To help drag you can add better fans to move air without effecting drag. Hot Rods are just bad for areo put they do have a lot of cooling area.



To help the mass flow of air the OEs developed much better cooling fans that are controlled by PWM (Pulse Width Modulating) the fan. These fans (I use one from a 2019 CTS-V) can consume 75 AMPs at full power (About 1.2 HP). With modern controls the fan is driven off 3 parameters. Coolant temp, A/C head pressure and inlet air temp. So the fan only runs as hard as it needs to. We have all been at a car show and a great looking car rolls by and all you hear is his crappy fan whaling away.



A fan will cover up or help a car with poor front end air flow, or a thick cooling stack. First is packaging. My buddy Jack Chisenhall (Owner Vintage Air) told me a long time ago the radiator is most efficient on the top 1/3. On double pass cross flow radiators the hottest engine coolant is at the top. Make sense. I always leave the top 1/3 of my radiators uncovered by the intercooler or the A/C condenser.



The cooling issues real became apparent to me once I moved from naturally aspirated engine to supercharged engines. Some of my earlier cars could hit 320 oil temps in 3 hard laps.



My cooling stack has evolved like the OEs. If you look at the cooling system of a current CTS-V or a Camaro ZL1 it is a module. It comes out as a single system. Engine cooling radiator, Intercooler, A/C condenser and fan are an assembly. This system is isolated by rubber isolators to the body/frame. I have moved to the same system. My cooling stack weights about 60 lbs wet so it sits on radiator isolators from a C-6 Corvette and the mass is held by the sub-frame. It is constrained for-aft and cross car with more rubber isolators that go to the radiator support. On Gunner did not allow enough “float” and failed 3 radiators. As you must have sorted out by now it this is not a bolt in system.



Keeping with an OE approach I have all my heat transfer done in the cooling stack. I have C&R build me a one off radiator to my print. It has a nice high efficiency core. (They used to use OE Denso cores and have moved to an in house core). The engine oil cooler is a NASCAR part oil to water, it also has 2 more oil to water heat exchanges to cool the power steering and transmission fluid.



To recap power train cooling. You need good air flow to cool things. Open up the front end and or add very good cooling fan(s). Use a high quality radiator. Allow the system room to thermally expand and contract. Make sure it mounting will survive track use.



On a side note on power train cooling. On my supercharger cooling systems I have tried a few things. After testing a few things and talking to some experts at work I have concluded that the super charging air to water systems work the best if you can keep the system flow up. So I like to keep the head pressure down by limiting the hose lengths and bends. Let the water flow as efficiently as possible. Use good pump(s) and make sure you get all the air out of the system. Designing the system so it will “burb” is critical to get the air out. To test after the system is bled, turn on the intercooler pump with the engine off. The pump should run smoothly with no tone. If you have air in the system you will hear it go through the pump. For the ZR1s at work it can take 2 hours to properly bleed the intercooler system to get all the air out.



You asked about diff cooling. During the development of the Gen 1 CTS-V we could see diff temps above 320F in about 7 laps of our test track. (For reference most synthetic oils break down above 320F). So we set that as an excursion temp to not exceed). We struggled to come up with a cost effective solution to cool our diffs for production. Most solutions were loud and expensive. We also had an issue with manual transmission temperatures. We worked with Tremec to develop a pump for the TR6060 transmission. This killed two bird with one stone. We use the internal transmission pump in the TR6060 and the Automatics to pump trans through a cooling loop. The pump moves trans fluid to the radiator to an oil to water heat exchanger. The cooled fluid is then moved to the diff to a oil to oil cooler then back to the transmission. The aftermarket T56 Magnums do not have the pump built into them but the casting will except the pump. I added it to Hellfire. It was cool but expensive. D&D Performance can do the modification. Now I just use a Weldon standalone pump on a switch.



It was not until Gunner that I added a diff temp sensor. What I discovered on Guner was if you have GearFX polish the gears you can do three 20 minute track sessions before the diff temps get over 300F. I did not add a diff cooler to Gunner.



The new LT5 powered car I am adding a differential cooling loop because I know it will be an issue with higher power.



The key to sorting all this out is data acquisition. Now that you can get system like RacePak or other data loggers you can look at the data after a session. It is way too hard to monitor everything while you are driving. Now you can set flags in the digital systems to flash when things go outside preset limits.



Sorry this is long winded…. But you asked.https://uploads.tapatalk-cdn.com/20200417/3d1f8280cee8dd9e3406adccea12ded4.jpg

[jmac]

Wow, all I have to say is wow. My mind is blown.

Thank you for the in depth explanation and reasoning.

I understand your car is built to beat the living snot out of, and do it for many minutes at a time while barely breaking a sweat. I know race car technology works it's way from the racetrack and eventually finds its way in to production cars.

Thank you for sharing that with us, I know that there is something we can all take away to make our cars just a tiny bit better, even if they'll never be driven to the level of your capability.

Thank you

[payne]

What I discovered on Guner was if you have GearFX polish the gears you can do three 20 minute track sessions before the diff temps get over 300F. I did not add a diff cooler to Gunner.


Really informative answer, thanks for sharing.

I'm a casual lurker with a neglected Meanstreet build, who also happens to be the CEO of a laboratory-grown diamond company (www.adadiamonds.com). If you're not aware, diamond is ~5x more thermally conductive than aluminum or copper, and there are many applications of lab diamonds as a heat spreader in satellites, lasers, 5G cell towers, etc.

Lab diamond heat spreaders really won't help a PT build, but DLC might be of interest to you.

Have you looked into DLC (diamond like carbon) coating any of your moving parts? Either professionally or with your builds? It's a fairly substantial coefficient of friction reduction versus metal on metal and might be of benefit to reduce the overall heat generated in your various systems.

Also, have you looked into Laminova heat exchangers? I'm a supplier to Koenigsegg and I know they have had great success with Laminova HEs:
http://www.laminova.se/products/oil-coolers

Lastly, to your point about driver and use case, I have a three-pedal 702rwhp 2nd Gen CTS-V. Upgraded HE for the blower, but OEM cooling otherwise. I'd overheat it halfway through my first flying lap of a HPDE, but the car does phenomenal in 2-3-4-3-2-3-2-3-4-3 driving in the twistys in the Santa Cruz mountains where I am traction and deer/wild turkey/road bicycle limited.

If you were a part of the CTS-V development, thanks for your work- it's a phenomenal car.

[PTAddict]

Hot Rod cooling. Fun topic. First off I want to give a disclaimer…..this is what worked for me.



Also 90% of people do not need to harden their cars this much because you don’t beat on them as hard as I do. Many times I’m asked to take someones car out on the track to see what it will do and I over temp their car. Even if the owners never had an issue. ...



A car has two parts to it, track capability and track durability. Capability is lap time, maybe one lap. Durability is how long it can do it. ...


I have been fighting cooling issues for years. Most aftermarket products were designed to cool vehicle that cruise around or do occasional drag racing.

...



+1 on everything Mark said. Doing track days and now amateur racing for 15+ years now, thermal management is maybe the most under-appreciated aspect of ultimate performance.

You will notice that the "customer" field on the drawing Mark included is not him. It's me - because I got in touch with C&R and asked them to duplicate Mark's setup on Hellfire, and then they included additional feedback on the design from Mark himself based on Gunner. I would highly recommend that if you're chasing the ultimate in track capability, you get in touch with the C&R folks. Extremely knowledgeable and competent. Not cheap compared to off the shelf systems that aren't up to the task, but very high value for what you get.

And to Mark, loving the thread and learning something all the time. I have a kind of Hellfire Jr. LT4-based remake of my car near completion - and a lot of it is just directly copied from what I learn from your builds. Thanks for sharing.

[Stielow]

Really informative answer, thanks for sharing.

I'm a casual lurker with a neglected Meanstreet build, who also happens to be the CEO of a laboratory-grown diamond company (www.adadiamonds.com). If you're not aware, diamond is ~5x more thermally conductive than aluminum or copper, and there are many applications of lab diamonds as a heat spreader in satellites, lasers, 5G cell towers, etc.

Lab diamond heat spreaders really won't help a PT build, but DLC might be of interest to you.

Have you looked into DLC (diamond like carbon) coating any of your moving parts? Either professionally or with your builds? It's a fairly substantial coefficient of friction reduction versus metal on metal and might be of benefit to reduce the overall heat generated in your various systems.

Also, have you looked into Laminova heat exchangers? I'm a supplier to Koenigsegg and I know they have had great success with Laminova HEs:
http://www.laminova.se/products/oil-coolers

Lastly, to your point about driver and use case, I have a three-pedal 702rwhp 2nd Gen CTS-V. Upgraded HE for the blower, but OEM cooling otherwise. I'd overheat it halfway through my first flying lap of a HPDE, but the car does phenomenal in 2-3-4-3-2-3-2-3-4-3 driving in the twistys in the Santa Cruz mountains where I am traction and deer/wild turkey/road bicycle limited.

If you were a part of the CTS-V development, thanks for your work- it's a phenomenal car.


Thanks for the post. Sorry I have not tried any of your coatings.

Yes I was part of HPVO (High Performace Vehicle Operations) when the CTSVs were being developed. Great cars!

Dave Mikels who sometime posts on here was also on the team and developed the system that keeps that car from Power Hopping.

Added is me driving a Pre-production car at Summit Point. Good times!

https://uploads.tapatalk-cdn.com/20200419/4ed94c9790ed3510dc92d128ec52132b.jpg


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[clill]

Can you diamond coat differential gears to make them quiet ?

[flyingv]

Thanks for the post. Sorry I have not tried any of your coatings.

Yes I was part of HPVO (High Performace Vehicle Operations) when the CTSVs were being developed. Great cars!

Dave Mikels who sometime posts on here was also on the team and developed the system that keeps that car from Power Hopping.

Added is me driving a Pre-production car at Summit Point. Good times!

https://uploads.tapatalk-cdn.com/20200419/4ed94c9790ed3510dc92d128ec52132b.jpg


Sent from my iPhone using TapatalkJust want to say thanks for the wealth of info that you share with your builds. I'm currently redoing my 1960 Impala hardtop and your clutch geometry explanation has been a god send. I actually had a used 4th gen pedal assembly from a T56 I bought to copy and I made a firewall bracket like the detriot speed.
81861


Also thank you for helping develop one of the the best American sedans ever built. They kinda have a soft place in my [emoji173] I owned a gen 1, moved to a gen 2, then things got out of hand...
81860

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[mikels]

Dave Mikels who sometime posts on here was also on the team and developed the system that keeps that car from Power Hopping.

For those interested.... One of the most challenging engineering projects I have had in my professional career.

BTW - FCA pays GM for every Hello-Kitty and the other performance cars in their line up to utilize this patent on their vehicles.

Regards
Dave

https://pdfpiw.uspto.gov/.piw?PageNum=0&docid=07938222&IDKey=8CAC8BC72402%0D%0A&HomeUrl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fn ph-Parser%3FSect1%3DPTO2%2526Sect2%3DHITOFF%2526p%3D1 %2526u%3D%25252Fnetahtml%25252FPTO%25252Fsearch-bool.html%2526r%3D3%2526f%3DG%2526l%3D50%2526co1%3 DAND%2526d%3DPTXT%2526s1%3Dmikels.INNM.%2526OS%3DI N%2Fmikels%2526RS%3DIN%2Fmikels

[raustinss]

And FCA still screwed it up from what I've seen ... grenaded rear ends and such

[CarlC]

Thanks for sharing Mark and Mike. It's these kind of systems projects that make for very difficult yet rewarding challenges. Nicely done fellas.

There is so much talk about how easy it is to make 800-1000hp, but to make it live reliably on-track then drive it home is a whole different monster than 1/4-mile at a time or short blips on the street.

Mike, I'd love to hear about your project sometime....

[cjfirstgen]

Thank you for the informative post Mark. I have followed your builds and paid particular attention to cooling for track durability.

Background:

Mercury Racing SB4 - running this C&R radiator (link below)with the 13 plate EOC and PSC. Added an Accusump, remote therm and filter into the circuit which should bring some added cooling capacity with volume and oil starvation insurance. Also larger remote PS reservoir. The MR ECU controls the fans. Vaporworx for PWM fuel delivery. I will have to watch for any radiator failures as I did not isolate(floating) the mounting as you have.

Added trans cooler with T56 internal pump. Diff gears are REM treated but no cooler thus far. We'll see how it does. Will monitor every temp with a Motec dash logger.



Q: Is the C&R radiator with integrated PSC and EOC the same capacity/specs on the 'Mark Stielow spec' or different?

https://www.crracing.com/product/chevrolet-camaro-pontiac-firebird-67-69-double-pass-radiator-module-ls-13-plate-w-eoc-psc-w-dual-11-spal-fans

[payne]

Sorry I have not tried any of your coatings.


To be clear, I sell custom made-to-order jewelry with man made diamonds, I don't offer DLC coatings. Was just simply sharing a complimentary tech to my work that may be of interest to folks here to reduce the BTUs you need to shed from your systems by reducing friction.

Here's a paper from Honda F1 claming they deduced friction in the transmission by 3.3kW with DLC:
http://www.f1-forecast.com/pdf/F1-Files/Honda/F1-SP2_43e.pdf

Can you diamond coat differential gears to make them quiet ?

Honestly, I'm not sure. The coating is only a few microns thick, and I think the proper setup of the ring and pinion is far more important than a lower friction coating of the gears.

[Stielow]

Thank you for the informative post Mark. I have followed your builds and paid particular attention to cooling for track durability.

Background:

Mercury Racing SB4 - running this C&R radiator (link below)with the 13 plate EOC and PSC. Added an Accusump, remote therm and filter into the circuit which should bring some added cooling capacity with volume and oil starvation insurance. Also larger remote PS reservoir. The MR ECU controls the fans. Vaporworx for PWM fuel delivery. I will have to watch for any radiator failures as I did not isolate(floating) the mounting as you have.

Added trans cooler with T56 internal pump. Diff gears are REM treated but no cooler thus far. We'll see how it does. Will monitor every temp with a Motec dash logger.



Q: Is the C&R radiator with integrated PSC and EOC the same capacity/specs on the 'Mark Stielow spec' or different?

https://www.crracing.com/product/chevrolet-camaro-pontiac-firebird-67-69-double-pass-radiator-module-ls-13-plate-w-eoc-psc-w-dual-11-spal-fans

I would be guessing looking at the photo. Call Phil at C&R he can tell you for sure. Great guy.

Mark

[cjfirstgen]

I would be guessing looking at the photo. Call Phil at C&R he can tell you for sure. Great guy.

Mark

I spoke with Phil...as you said great guy with a wealth of information. Basic summary is very similar capacity in cooling for the EOC and PSC although quite different in shape and size but your radiator capacity is a bit larger which you were probably aware. The PS cooler is the same one used in Nascar btw.

[jmac]

Mark,

I know that with your radiator, you have the weight of the unit sitting on those pins using the C6 bushing/grommet attached to your frame rails.

The brackets and bushing/grommet you're using on the side of the end tanks, where are they from?

Thanks!

John

[Stielow]

Mark,

I know that with your radiator, you have the weight of the unit sitting on those pins using the C6 bushing/grommet attached to your frame rails.

The brackets and bushing/grommet you're using on the side of the end tanks, where are they from?

Thanks!

John


C&R made them off my drawings. The first art Sled Alley designed and fabricated


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[WILWAXU]

I called Dorman tech dept. today and gave him the part # listed by Mark and they told me that it is plastic and has been plastic for at least 7 years. Not sure what to think. :hairpullout:

Apparently the secret is to order it from Summit Racing on the west-coast... Sparks, NV.

The description on Summit said "plastic", but this is what I got :D

[jmac]

Mark,

I don't think you've told us about your transmission? What clutch are you going to run and what mods are done to it to help it survive from all that power and your driving style? :drive:

[Stielow]

Mark,

I don't think you've told us about your transmission? What clutch are you going to run and what mods are done to it to help it survive from all that power and your driving style? :drive:


I went to the Centerforce DYAD clutch on the last 4 builds. Low pedal effort, easy to modulate and holds the power if you break it in properly. It also has a good hi RPM reserve when installed with the Centerforce throw out bearing. Their throw out bearing give a bit more travel and make red line shifts super clean.


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[jmac]

No mods to the T56? Are you running the Super Magnum?

[Stielow]

No mods to the T56? Are you running the Super Magnum?


I had D&D Performance tuned up my T56 Magnum. Their shop is 5 miles from my house and they are great to deal with.

Off memory replaced all the nylon sliders with brass and added better synchronizers where needed.

I also have 6th gear swapped to a 0.5 ratio to make cruising on the highway at 80 mph at around 1840 rpm.


Sent from my iPhone using Tapatalkhttps://uploads.tapatalk-cdn.com/20200424/f816ea940138b1185ef640ec4adf8f53.jpg

[67XR7]

Do not be sorry that this post was long. Call me a nerd or whatever, but I love this type of stuff! Thanks Mark!

https://uploads.tapatalk-cdn.com/20200417/2d06df4c4b0fefaa7239283d79f91d58.jpg


Hot Rod cooling. Fun topic. First off I want to give a disclaimer…..this is what worked for me.



Also 90% of people do not need to harden their cars this much because you don’t beat on them as hard as I do. Many times I’m asked to take someones car out on the track to see what it will do and I over temp their car. Even if the owners never had an issue. I brake, corner and accelerate harder than most people. Ask my buddy Gordon. Oh he won’t let me drive his stuff anymore.



A car has two parts to it, track capability and track durability. Capability is lap time, maybe one lap. Durability is how long it can do it. At work we run test called “Tanks full of fuel”. We fill the car all the way up and run it flat out on a race track until the fuel runs out. We do these back to back. A vehicle with usually thermally stabilize after the 2nd tank fulls of fuel.



Most of us that take our cars to open track days run 20 minute sessions. These are usually about 40 minutes apart. So not as hard on stuff as what we test at work. If you just AutoX you will most likely not have any issues other than power steering cooling. Make sure for whatever you do make sure the power steering cooler is big enough. I now just use a oil to water transmission cooler built into the rad. C&R talked me into a smaller one on Jackass and I killer 4 power steering pumps before I went to a bigger cooler.



I have been fighting cooling issues for years. Most aftermarket products were designed to cool vehicle that cruise around or do occasional drag racing.



With the growth of Pro-Touring track events over the last 15 years the need to cool these cars has become apparent. I was an anomaly back in the ‘90 going to open track days and doing One Lap of America. When I rolled up to tech Brock Yates was amazed. He was correct, we did not finish and we did catch on fire! I learned a lot on One Lap.



As a little background on how I sorted some of this out. I was fortunate that my day job was developing high performance vehicles for GM at about the same time my Camaro started to get real fast. We would take a “Street” car to the race track and we would have all kinds of cooling issues.



It was during this time frame I came to understand not all cooling parts are created equal. Most of your “Hot Rod” radiator companies use cooling technology from the 70s. Have you hear the term “I have a 2 core radiator in this”. The OE to save mass, cost and add fuel economy have worked with suppliers to develop higher efficiency cores. (Heat rejection per square inch). The OEs are always attempting to balance the mass flow of air around and trough the vehicle. Cooling needs mass flow of air. But the more air you jam into the radiator and brake cooling duct the more the drag goes up. To help drag you can add better fans to move air without effecting drag. Hot Rods are just bad for areo put they do have a lot of cooling area.



To help the mass flow of air the OEs developed much better cooling fans that are controlled by PWM (Pulse Width Modulating) the fan. These fans (I use one from a 2019 CTS-V) can consume 75 AMPs at full power (About 1.2 HP). With modern controls the fan is driven off 3 parameters. Coolant temp, A/C head pressure and inlet air temp. So the fan only runs as hard as it needs to. We have all been at a car show and a great looking car rolls by and all you hear is his crappy fan whaling away.



A fan will cover up or help a car with poor front end air flow, or a thick cooling stack. First is packaging. My buddy Jack Chisenhall (Owner Vintage Air) told me a long time ago the radiator is most efficient on the top 1/3. On double pass cross flow radiators the hottest engine coolant is at the top. Make sense. I always leave the top 1/3 of my radiators uncovered by the intercooler or the A/C condenser.



The cooling issues real became apparent to me once I moved from naturally aspirated engine to supercharged engines. Some of my earlier cars could hit 320 oil temps in 3 hard laps.



My cooling stack has evolved like the OEs. If you look at the cooling system of a current CTS-V or a Camaro ZL1 it is a module. It comes out as a single system. Engine cooling radiator, Intercooler, A/C condenser and fan are an assembly. This system is isolated by rubber isolators to the body/frame. I have moved to the same system. My cooling stack weights about 60 lbs wet so it sits on radiator isolators from a C-6 Corvette and the mass is held by the sub-frame. It is constrained for-aft and cross car with more rubber isolators that go to the radiator support. On Gunner did not allow enough “float” and failed 3 radiators. As you must have sorted out by now it this is not a bolt in system.



Keeping with an OE approach I have all my heat transfer done in the cooling stack. I have C&R build me a one off radiator to my print. It has a nice high efficiency core. (They used to use OE Denso cores and have moved to an in house core). The engine oil cooler is a NASCAR part oil to water, it also has 2 more oil to water heat exchanges to cool the power steering and transmission fluid.



To recap power train cooling. You need good air flow to cool things. Open up the front end and or add very good cooling fan(s). Use a high quality radiator. Allow the system room to thermally expand and contract. Make sure it mounting will survive track use.



On a side note on power train cooling. On my supercharger cooling systems I have tried a few things. After testing a few things and talking to some experts at work I have concluded that the super charging air to water systems work the best if you can keep the system flow up. So I like to keep the head pressure down by limiting the hose lengths and bends. Let the water flow as efficiently as possible. Use good pump(s) and make sure you get all the air out of the system. Designing the system so it will “burb” is critical to get the air out. To test after the system is bled, turn on the intercooler pump with the engine off. The pump should run smoothly with no tone. If you have air in the system you will hear it go through the pump. For the ZR1s at work it can take 2 hours to properly bleed the intercooler system to get all the air out.



You asked about diff cooling. During the development of the Gen 1 CTS-V we could see diff temps above 320F in about 7 laps of our test track. (For reference most synthetic oils break down above 320F). So we set that as an excursion temp to not exceed). We struggled to come up with a cost effective solution to cool our diffs for production. Most solutions were loud and expensive. We also had an issue with manual transmission temperatures. We worked with Tremec to develop a pump for the TR6060 transmission. This killed two bird with one stone. We use the internal transmission pump in the TR6060 and the Automatics to pump trans through a cooling loop. The pump moves trans fluid to the radiator to an oil to water heat exchanger. The cooled fluid is then moved to the diff to a oil to oil cooler then back to the transmission. The aftermarket T56 Magnums do not have the pump built into them but the casting will except the pump. I added it to Hellfire. It was cool but expensive. D&D Performance can do the modification. Now I just use a Weldon standalone pump on a switch.



It was not until Gunner that I added a diff temp sensor. What I discovered on Guner was if you have GearFX polish the gears you can do three 20 minute track sessions before the diff temps get over 300F. I did not add a diff cooler to Gunner.



The new LT5 powered car I am adding a differential cooling loop because I know it will be an issue with higher power.



The key to sorting all this out is data acquisition. Now that you can get system like RacePak or other data loggers you can look at the data after a session. It is way too hard to monitor everything while you are driving. Now you can set flags in the digital systems to flash when things go outside preset limits.



Sorry this is long winded…. But you asked.https://uploads.tapatalk-cdn.com/20200417/3d1f8280cee8dd9e3406adccea12ded4.jpg

[Jimbo1367]

Mark,
What website is the speed calculator on? I couldn't find it. Yes I did look before bothering you LOL

thanks,
Jim

[Stielow]

Mark,
What website is the speed calculator on? I couldn't find it. Yes I did look before bothering you LOL

thanks,
Jim


It is an app from TREMEC. It is on my phone

Thankshttps://uploads.tapatalk-cdn.com/20200510/3d56708519178845c49272395155098a.jpg


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[CarlC]

The Tremec app is great but be sure to remove the protective case on the phone or else false angle readings can occur.

[130fe]

Anyone ever use the Spicer app? Like if you want to use an angle gauge instead of your phone?

[BonzoHansen]

The Tremec app is great but be sure to remove the protective case on the phone or else false angle readings can occur.And buttons on the side. I can't use my s8 because it has buttons on both sides. I used my old ipod instead

[steve da wrench]

I did not see anywhere where you state what the part # is for the a Mann and Hummel Air oil separator. I looked on their website but did not find that particular one.

Also, who made all of the mods to the Peterson oil tank? Is this something we can purchase with all of the mods done to it, or was your own custom design & made thing?

Thanks for all of the great info. Saves the rest of us a ton of effort and wasted time and parts! :D

[cwylie]

I have not been able to find anyone with these pedal covers. Any ideas?

[steve da wrench]

I have not been able to find anyone with these pedal covers. Any ideas?
Should be at any GM dealer.
GM Parts giant.com shows them for $8.72
:)

[camcojb]

https://www.gmpartsdirect.com/oem-parts/gm-f--s-pad-88996614

https://www.gmpartsgiant.com/parts/gm-pad-88996614.html

[cwylie]

Yeah I order from those and they canceled both because they were on backorder with no ETA.

[clill]

Try this ?

https://www.wholesalegmpartsonline.com/products/PAD-BrakeClutch-Pedal/3103878/88996614.html

[clill]

https://www.gmpartsgiant.com/parts/gm-pad-88996614.html

[Stielow]

Car is at the Dutchboys and they are working on it. Looks like they got some new tennis balls to block it.

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[JD67SS]

I know you want white, but have you seen Chalk?
Might be kinda cool...

https://rennlist.com/forums/718-gt4-spyder/1193667-chalk-gt4-spyder-thread.html

JD

[Ketzer]

I know you want white, but have you seen Chalk?
Might be kinda cool...

https://rennlist.com/forums/718-gt4-spyder/1193667-chalk-gt4-spyder-thread.html

JD

You're really trying to set clill off now.....:lmao:

[clill]

I actually like that. Go figure...

[214Chevy]

That "chalk" color is such a beautiful color in person. I've seen many Porsche's with it and I like it...so much so, that I actually considered it on my Camaro with bronze wheels.

[Stielow]

Is that light grey?


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[Stielow]

Aaron Oberle made me a new shift boot ring. It is big enough to pull the shifter if needed. Makes pulling and install the transmission easier. I like to fill the transmission from the shifter hole. Way easier.

https://uploads.tapatalk-cdn.com/20200521/56ee70e6a1363e43ea3882abed2dc31b.jpg


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[Stielow]

Dakota Digital has finalized my gauges and are getting ready to make them. Great team to work with. They should look great!

https://uploads.tapatalk-cdn.com/20200521/206c4be8255e2cbf58992db54cbf5c1c.jpg
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https://uploads.tapatalk-cdn.com/20200521/9eff1302cc762e65b8308a0ce2029695.jpg


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[clill]

Below the LT5 it should say “Stielow Engineering”

[Stielow]

Below the LT5 it should say “Stielow Engineering”


This will be in the digital screen during startup!

https://uploads.tapatalk-cdn.com/20200521/f2479be3ed7cfe38c4603beb552f3796.jpg


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[Ketzer]

I actually like that. Go figure...

What!?! After all the gray/grey debate...I totally agree, it really is a good looking shade.

That "chalk" color is such a beautiful color in person. I've seen many Porsche's with it and I like it...so much so, that I actually considered it on my Camaro with bronze wheels.

Great minds! We just got a chalk car and are changing the stock wheels over to something that has a hint of bronze!

Is that light grey?


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Very light grey. Pics dont really do it justice. You can't really see how grey it is in pics.


Jeff-

[JD67SS]

Is that light grey?


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I would say it’s more of an off white.
Or like a bone white.
Hell, have D.B. Spray a swatch

JD

[F'in mine]

https://uploads.tapatalk-cdn.com/20200521/206c4be8255e2cbf58992db54cbf5c1c.jpg
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I guess it really pays to have friends in high places, very nice!

How about going to some thing like this for paint with matte black accenting, paying homage to the original hugger orange. Would love to see this combo on a 69.
https://www.bmwblog.com/2016/06/18/sakhir-orange-bmw-m4-hre-r101-wheels-brushed-gold/#jp-carousel-192842

[colorado80439]

Ya how cool would it be to see a Hugger orange Stielow build!

[DKz Garage]

Mark...... I wonder if you would have some input on brake line size. I know a lot of your recent builds have ABS. What size brake line do you use? I'm using the DSE master (GM part) and booster on my 69 ...I will be making all my own brake lines and was looking to use 3/16" for the entire car. I know GM used 3/16 in the front (disc brakes) but ran 1/4" to the rear? Could you shed some light on what you normally do with your cars?? Thanks in advance.

[Stielow]

https://uploads.tapatalk-cdn.com/20200521/206c4be8255e2cbf58992db54cbf5c1c.jpg
https://uploads.tapatalk-cdn.com/20200521/9bea84ff3d6a5f9c56f1a69967bdc8db.jpg

I guess it really pays to have friends in high places, very nice!

How about going to some thing like this for paint with matte black accenting, paying homage to the original hugger orange. Would love to see this combo on a 69.
https://www.bmwblog.com/2016/06/18/sakhir-orange-bmw-m4-hre-r101-wheels-brushed-gold/#jp-carousel-192842


The hard part is designing a one off bezel. Dakota Digital made the process very easy.

It is available to anyone.

https://uploads.tapatalk-cdn.com/20200522/274ba78c1d8a1f11fd84bba29a403546.jpg


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[Stielow]

Another issue with big power cars on open track days is brake cooling. I did big brake cooling ducts on Hellfire and they worked great. I did not do brake cooling ducts on Gunner and Jackass and those cars brakes felt soft on track and they killed brake pads.

We looked a few options on this car. Option one add cooling duct to the center of the front turn signal.

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I kinda liked it but I felt we need more air flow. Modify velocity stacks.

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Now I gave a 5 inch opening that will funnel air down the hydra formed DSE frame rail and dump air on the brakes.

https://uploads.tapatalk-cdn.com/20200522/e51a9703ec16587b4877e6afd53923bb.jpg


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[Stielow]

Mark...... I wonder if you would have some input on brake line size. I know a lot of your recent builds have ABS. What size brake line do you use? I'm using the DSE master (GM part) and booster on my 69 ...I will be making all my own brake lines and was looking to use 3/16" for the entire car. I know GM used 3/16 in the front (disc brakes) but ran 1/4" to the rear? Could you shed some light on what you normally do with your cars?? Thanks in advance.

On my builds I do 1/4 lines to the ABS module and 3/16 to the corners. In general if you copy what GM does it will work. GM and most OEMs are either cheap, worried about safety or durability. For ABS the bigger line is need to supply the volume of fluid needed for the ABS module. For a passive system that you are not gong to track 3/16 for everything should be good. If I was going to track the car with big brakes I would do 1/4 to the tee for the front and rear systems, Then 3/16 to the corners.

Mark

[DKz Garage]

On my builds I do 1/4 lines to the ABS module and 3/16 to the corners. In general if you copy what GM does it will work. GM and most OEMs are either cheap, worried about safety or durability. For ABS the bigger line is need to supply the volume of fluid needed for the ABS module. For a passive system that you are not gong to track 3/16 for everything should be good. If I was going to track the car with big brakes I would do 1/4 to the tee for the front and rear systems, Then 3/16 to the corners.

Mark

Thank you for your input!!

[Stielow]

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https://uploads.tapatalk-cdn.com/20200522/835f7a0fa4e62968fe304d861648a600.jpg


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[214Chevy]

Nice, as usual Mark...

[DKz Garage]

Mark, What has been your experience with the Hooker Black Heart exhaust system designed by Holley for the 69 Camaro with DSE sub and Quadralink? Does it fit in nice, any mods needed to make it work? I'm running and LT4 with all Holley mounts/crossmember. Did you use the Hooker system on your last build (LT4) ??

[Stielow]

Mark, What has been your experience with the Hooker Black Heart exhaust system designed by Holley for the 69 Camaro with DSE sub and Quadralink? Does it fit in nice, any mods needed to make it work? I'm running and LT4 with all Holley mounts/crossmember. Did you use the Hooker system on your last build (LT4) ??


Yes it works great!


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[cjfirstgen]

On my builds I do 1/4 lines to the ABS module and 3/16 to the corners. In general if you copy what GM does it will work. GM and most OEMs are either cheap, worried about safety or durability. For ABS the bigger line is need to supply the volume of fluid needed for the ABS module. For a passive system that you are not gong to track 3/16 for everything should be good. If I was going to track the car with big brakes I would do 1/4 to the tee for the front and rear systems, Then 3/16 to the corners.

Mark

Would you do the same size lines 1/4 to the tee front and rear with manual big brakes for the track? Note: 7/8" bore size master cylinder and caliper piston area spec'd for a manual big brake setup

[Stielow]

Would you do the same size lines 1/4 to the tee front and rear with manual big brakes for the track? Note: 7/8" bore size master cylinder and caliper piston area spec'd for a manual big brake setup


If I was building it I would use 1/4. I think 3/16 would be fine.

I don’t have any good data on passive brakes. I have not used them for 12 years.

On my older builds I did 3/16 to the front tee.

It worked.

Mark


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[Musclerodz]

I don’t have any good data on passive brakes. I have not used them for 12 years.

Mark

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The reality of just how far ahead of the curve Mark is. Playing on another level. Everyone else still trying to figure out what master cylinder to use.:king:

[Stielow]

Porsche Calk White ?

https://uploads.tapatalk-cdn.com/20200525/7b298f2d16e2a9adf927aa66d2024a45.jpg
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[jmac]

No you didn't!

[Stielow]

No you didn't!


No it is primer


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[colorado80439]

Well if you're going chalk, you might as well go matte

https://i.redd.it/5wvg214bfmm01.jpg


I'm still voting for Hugger

https://hot-cars.org/2017/05/25/hugger-orange-1969-camaro-wt-brand-new-zl1-motor/

[camcojb]

No it is primer


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:bunny:

[SSLance]

No it is primer




:D :lmao:

[OLDFLM]

Porsche Calk White ?

https://uploads.tapatalk-cdn.com/20200525/7b298f2d16e2a9adf927aa66d2024a45.jpg
https://uploads.tapatalk-cdn.com/20200525/a05ad956650506fccaf918b6f8d60a72.jpg
https://uploads.tapatalk-cdn.com/20200525/6692ca42c3f4201f1f6e0689bf4bcd0b.jpg


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Same color as GW's 40 right? :stirthepot:

Sure miss him...

[DKz Garage]

Mark, do you run an expansion tank on the LT4 / LT5 swaps?? If so, what tank has worked for you?

TIA.

[Stielow]

Mark, do you run an expansion tank on the LT4 / LT5 swaps?? If so, what tank has worked for you?

TIA.

For the radiator and the intercooler system I do not run an overflow tank. The radiator has a small amount of air in it for expansion I do run an overflow tank. Not sure the brand. What ever will package. No tank for the intercooler system.

Mark

[DKz Garage]

Mark... I know you run a dry sump in your cars.....As these supercharged motors create a lot of heat - Do you run an external oil cooler, if so, where do you mount it?? TIA

Sorry to be "that guy" with all the questions :)

[Stielow]

Mark... I know you run a dry sump in your cars.....As these supercharged motors create a lot of heat - Do you run an external oil cooler, if so, where do you mount it?? TIA

Sorry to be "that guy" with all the questions :)


It is built into the end tank of the C&R radiator. Oil to water heat exchanger.

Works great.

I also use a oil adaptor with a built in thermostat. Improved Racing makes one as well as Holley.

https://uploads.tapatalk-cdn.com/20200603/31c4a574d80e47ec10207b23df6ce26e.jpg

https://uploads.tapatalk-cdn.com/20200603/86e129387781572354979883315ebefd.jpg



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[DKz Garage]

It is built into the end tank of the C&R radiator. Oil to water heat exchanger.

Works great.

I also use a oil adaptor with a built in thermostat. Improved Racing makes one as well as Holley.

https://uploads.tapatalk-cdn.com/20200603/31c4a574d80e47ec10207b23df6ce26e.jpg


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Thank you as always Mark!

[jmac]

I would be interested to see your plumbing from the side of the block from the Holley thermostat piece up to the radiator. I'm interested in how you routed it and what you used to transfer the oil.

Thanks!

[Stielow]

I would be interested to see your plumbing from the side of the block from the Holley thermostat piece up to the radiator. I'm interested in how you routed it and what you used to transfer the oil.

Thanks!


We will get some photos during assembly. Basically -10 AN hose. Fairly straight forward.


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[Stielow]

The Dutchboys are done with the final block sanding. Now it comes apart to get put on the rotisserie to prep the bottom and the firewall.

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[Stielow]

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[Stielow]

Working on cleaning up the wiring on the LT5 crate harness. The LT5 uses 2 ECMs.

Lots of wires

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[F'in mine]

Working on cleaning up the wiring on the LT5 crate harness. The LT5 uses 2 ECMs.
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I guess the 2nd ECM triggers the other new port injection system. How are they activated, engine rpm?

[WSSix]

That's what I'm wondering, too, Simon. I didn't realize these engines had two ECU's

[Stielow]

I guess the 2nd ECM triggers the other new port injection system. How are they activated, engine rpm?


The 2nd ECM S53 is basically a slave ECM that drives the 8 extra Port Fuel Injectors. It is controlled by CAN messaging from the primary E99 ECM. The engine calibration lives in the E99 ECM.

This is needed because a LT5 has 8 Direct Injectors and 8 PFI injectors.

HP Tuners has cracked into the ECM so now you can tune it.




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[Stielow]

https://uploads.tapatalk-cdn.com/20200611/ffe730b50553b0824bb781e5f44b2424.jpg
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More progress at the Dutchboys


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[Stielow]

https://uploads.tapatalk-cdn.com/20200611/049754a3c7294a658ea1c7b87a96d52c.jpg
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We got the emblems back from Advanced Plating. Nice parts!


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[Stielow]

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[jmac]

Looks great! What are all the black bits painted with?

[Stielow]

Looks great! What are all the black bits painted with?


I’ll find out


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[Stielow]

https://uploads.tapatalk-cdn.com/20200615/30c21c479f8c07472f2a407476ca39a5.jpg
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SMC here in SE MI modified my Recaros with some red houndstooth fabric. We will do the rear seat to match


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[Sales@Dutchboys]

Looks great! What are all the black bits painted with?

All the black parts are paint with a black base and satin clearcoat.

[will69camaro]

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SMC here in SE MI modified my Recaros with some red houndstooth fabric. We will do the rear seat to match


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Houndstooth Recaros look great, but I am biased.

Being red, they'll go nice with White :)

[jmac]

Houndstooth Recaros look great, but I am biased.

Being red, they'll go nice with White :)

I agree, it's a great color combo. Can't wait to see assembly pics!

[69hugger]

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We got the emblems back from Advanced Plating. Nice parts!


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Question for you...Are these stock emblems you simply had chromed, or were they custom made in a different size or font?
I ask because just yesterday I contacted a custom emblem manufacturer about having some valve cover medallions made with "LS-3" engraved on them. I was told LS-3 is GM trademarked, and they were asked not to reproduce it. I was shocked.

[Stielow]

Question for you...Are these stock emblems you simply had chromed, or were they custom made in a different size or font?
I ask because just yesterday I contacted a custom emblem manufacturer about having some valve cover medallions made with "LS-3" engraved on them. I was told LS-3 is GM trademarked, and they were asked not to reproduce it. I was shocked.


We made them one off. Not sure if LS3 is copy righted or not. We just did it.


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[69hugger]

Thanks Mark. I guess I need to find a "renegade" CNC guy. Any ideas where I can get a couple 3" x 1-5/8" CNC machined medallions made would be appreciated.

[214Chevy]

Question for you...Are these stock emblems you simply had chromed, or were they custom made in a different size or font?
I ask because just yesterday I contacted a custom emblem manufacturer about having some valve cover medallions made with "LS-3" engraved on them. I was told LS-3 is GM trademarked, and they were asked not to reproduce it. I was shocked.

That's odd...there are several companies selling Chevy emblem'd products.
Contact Shawn at EVOD or Jonathan at Sparc Industries. Either one of them will make you whatever you want made.

[BDAZSVT]

Thanks Mark. I guess I need to find a "renegade" CNC guy. Any ideas where I can get a couple 3" x 1-5/8" CNC machined medallions made would be appreciated.

You might try Joel at https://www.jccustomscnc.com/

[kwhizz]

Need Updates...… !!!!!!!!!!

[Stielow]

The car is at paint and the Dutchboys are doing a great job.

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[Stielow]

We dumped the engine at Katech. Runs solid and made 915 HP and 870 ft*lbs. We ran into an issue with the HP Tuners tuning capabilities. We need access to some tables that do not have. It is dropping boost at 6400 RPM. I’m sure the engine will make 950 HP once we get that sorted.

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[colorado80439]

Looks great! What are all the black bits painted with?

I was wondering as well!

[payne]

We dumped the engine at Katech. Runs solid and made 915 HP and 870 ft*lbs. We ran into an issue with the HP Tuners tuning capabilities. We need access to some tables that do not have. It is dropping boost at 6400 RPM. I’m sure the engine will make 950 HP once we get that sorted.

https://uploads.tapatalk-cdn.com/20200703/5b6c7b2dabe2a7ca1856a3f5c3ed558f.jpg


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Yeehaw. Will you be running traction control and what tire will you put the power down with? All the way to R7s, or will you use a more streetable tire?

I make 702rwhp on E50 in my daily driver (2nd gen CTS-V, manual transmission) and 580rwhp on 91octane.

Even with drag radials and 4200lbs, the car will light off the top of 3rd gear on ethanol. On Pilot Sports it'll sometimes light off the top of 4th, which is... entertaining if you stay in it.

I can't imagine a 200 TW hooking below 100mph at 950hp and low 3000lbs :)

[Stielow]

Yeehaw. Will you be running traction control and what tire will you put the power down with? All the way to R7s, or will you use a more streetable tire?

I make 702rwhp on E50 in my daily driver (2nd gen CTS-V, manual transmission) and 580rwhp on 91octane.

Even with drag radials and 4200lbs, the car will light off the top of 3rd gear on ethanol. On Pilot Sports it'll sometimes light off the top of 4th, which is... entertaining if you stay in it.

I can't imagine a 200 TW hooking below 100mph at 950hp and low 3000lbs :)


No traction control, all by just straight up driver control. I have road raced a lot of cars with more power on 200 tread wear tires with no issues. I would not let anyone else drive it but it works just fine.

Yes you can do roll on burn outs in 3 rd gear! Good stuff! [emoji106]


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[garickman]

Thanks Mark. I guess I need to find a "renegade" CNC guy. Any ideas where I can get a couple 3" x 1-5/8" CNC machined medallions made would be appreciated.

Probably one of the best emblem guys in the business.

https://www.instagram.com/radmachining/

[BigBronco]

Beautiful. Can't wait to see it in person!

[Stielow]

Small detail. Tuned up the blower lid.

Before and after

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[jmac]

Looks good! I'm not that familiar with the way they are stock. Are the fins and lettering not exposed aluminum already? Probably not, being hidden under that big CF cover!

Nice detail that certainly adds up with all the other subtle touches you've done.

[Stielow]

Dutchboys are getting close to putting the stripes on it.

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[214Chevy]

Nice....

[Stielow]

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[Stielow]

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[jmac]

Beautiful. Love your logo in the gauge startup.

What is the actual color you wound up using?

[kwhizz]

Getting close to coming home ?????

[Stielow]

Beautiful. Love your logo in the gauge startup.

What is the actual color you wound up using?


It is a clean color white from a VW. I’ll ask the Dutchboys the name.


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[Stielow]

Getting close to coming home ?????


I think the Dutchboys have it another week.


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[BillyBobL71]

You're gettin' pretty fancy with those gauges (look great)...what's next, a custom interior?

[EVIL SS]

It is a clean color white from a VW. I’ll ask the Dutchboys the name.


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Looks great! It reminds me of my 1991 VW Gti, Alpine white

[DKz Garage]

The car is going to be killer (like all your builds). Was wondering if you run a remote solenoid in the trunk or a Mega fuse to protect the heavy gauge wire running to the front of the car/starter??

[kwhizz]

Updates ???????

[Stielow]

The car is going to be killer (like all your builds). Was wondering if you run a remote solenoid in the trunk or a Mega fuse to protect the heavy gauge wire running to the front of the car/starter??


I run a master battery disconnect in the trunks next to the battery. I’ve never fused the large power cable from the battery to the front of the car. In practice it would be a good idea. Not sure of the best way to do it.


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[Stielow]

Updates ???????


The engine is ready to go! I cleaned up the GM crate wiring harness and added the circuits I needed. Re-loomed the harness.

The engine and trans are ready to go in.

The car is supposed to be back from the Dutchboys Friday of this week.

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[andrewb70]

I run a master battery disconnect in the trunks next to the battery. I’ve never fused the large power cable from the battery to the front of the car. In practice it would be a good idea. Not sure of the best way to do it.


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Mark,

Something like this might be very easy to install.

https://www.waytekwire.com/item/45595/Littelfuse-ZCASE-Single-Mega-Starter/

https://www.waytekwire.com/datasheet/LiveWire_45624.pdf

Andrew

[DKz Garage]

Mark,

Something like this might be very easy to install.

https://www.waytekwire.com/item/45595/Littelfuse-ZCASE-Single-Mega-Starter/

https://www.waytekwire.com/datasheet/LiveWire_45624.pdf

Andrew

This looks like a great option! Has anyone used these with success? ie; holding up under starting loads....

[EVIL SS]

This looks like a great option! Has anyone used these with success? ie; holding up under starting loads....

I used this on my road race car(not a street car) - https://www.summitracing.com/parts/bss-cb185-150?rrec=true

[Stielow]

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[WSSix]

Very nice, Mark. Glad it's out of the body shop.

[jmac]

Looks great. Now you can take your time assembling it since SEMA has been cancelled this year.

Really looking forward to those assembly pics!

[streetbird]

love it
simple and clean but with a lot of small details

It can't done better than this

[Stielow]

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[kwhizz]

Sa weet !!!!!!

[waynieZ]

Wow neat and clean you gotta love those Dutchboys! Mark what size intake tube do you use?

[ArisESQ]

What size tires are you running on this one?

[Stielow]

Wow neat and clean you gotta love those Dutchboys! Mark what size intake tube do you use?


The induction tube is 4.5 inches. A LT5 has a 95 mm throttle body vs a 90 on a LS7 TB. The 4.5 inch tube worked well.


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[Stielow]

What size tires are you running on this one?


275 front and 335 rears on 18s


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[randy]

The induction tube is 4.5 inches. A LT5 has a 95 mm throttle body vs a 90 on a LS7 TB. The 4.5 inch tube worked well.


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That is what I’m looking for as well but airaid does not make a kit. Where did they get the 4.5” bends from?

[ArisESQ]

275 front and 335 rears on 18s


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Appreciate the info

It seems you run those same sizes on all your builds. Just wondering, did you eventually land on those sizes after trial and error with different sizes to achieve some desired dynamics?

Do you find that the cars tend to understeer with the 275 front? Have you experimented with different sizes?

[Stielow]

Appreciate the info

It seems you run those same sizes on all your builds. Just wondering, did you eventually land on those sizes after trial and error with different sizes to achieve some desired dynamics?

Do you find that the cars tend to understeer with the 275 front? Have you experimented with different sizes?


Hellfire had 315s on the fronts, that required Anvil flared front fenders. With stock sheet metal and DSE front sub frame a 275 is about the limit on a 10 inch rim.

You can balance the car well with this set up.

Mark


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[Stielow]

Engine is in

https://uploads.tapatalk-cdn.com/20200831/f477480f58f4296c9c77a51a0b498ebb.jpg


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[214Chevy]

Super nice...

[jmac]

It'll be running by the weekend! :lol:

Looks great, making progress every day!

[fleetus macmullitz]

Engine is in

https://uploads.tapatalk-cdn.com/20200831/f477480f58f4296c9c77a51a0b498ebb.jpg


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Charley must be ‘white’ with envy!
:thankyou:

[clill]

My favorite color......

[Stielow]

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[RKROEGER]

That really fills the underhood space. Looking good though

[kwhizz]

A work of Art !!!!!!!

[OLDFLM]

Engine is in

https://uploads.tapatalk-cdn.com/20200831/f477480f58f4296c9c77a51a0b498ebb.jpg


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Does the LT5 clear the hood Mark? Did you go with a bigger cowl?

[Stielow]

Does the LT5 clear the hood Mark? Did you go with a bigger cowl?


With it fits under the stock profile of a 1969 Camaro without the structure under the hood. I use a Carbon hood off my molds.


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[Stielow]

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[Jim Hoke]

Just flat out amazing....... Each build improving on the last. OEM components and fitment...........but tweaked WAY beyond factory specs.
You really set the bar high Mark. Very nice job to you and your team of supporters, and thanks for sharing the pics and details

[kwhizz]

Your builds are getting to the point of being too nice to drive..... LOL !!!!!!

[akrapovic]

Your builds are getting to the point of being too nice to drive..... LOL !!!!!!

Agreed, but he drives the $h!t out of them lol

[NAPA 68]

Phenomenal.............just freakin phenomenal. I don't care what your are building or restoring........one needs to take lesson and inspiration to these builds.

[ArisESQ]

Just wondering - have you mentioned what gear ratios your going with on this one? Any info on the third member you selected?

Thanks again!

[Stielow]

Just wondering - have you mentioned what gear ratios your going with on this one? Any info on the third member you selected?

Thanks again!


I’m running a 3.50 ratio with a Tremec Magnum with a 2.66 first gear. I ran a similar set up with my LT4 and it worked well.

The 3rd member is a GearFX Ford 9 inch the Ford gear is micropolished and run in on their dyno. If you can find a real Ford gear I’ve had the best luck with them for noise.


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[Stielow]

It is going back together. It will come back to my shop for the final wiring.

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[randy]

With the ecu up front where do you route the wires to go behind the engine? I wanted to do that with my gmpp controller but the wires weren’t long enough to put behind the firewall with the ecu and fuse box up on the core support

[Stielow]

With the ecu up front where do you route the wires to go behind the engine? I wanted to do that with my gmpp controller but the wires weren’t long enough to put behind the firewall with the ecu and fuse box up on the core support


I extended the wires. Approximately a 100 of them. Well that is what it seemed like.

Mark


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[Stielow]

I extended the wires. Approximately a 100 of them. Well that is what it seemed like.

Mark


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[Stielow]

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Corvette C6 ZR1 caliper with a Gen 6 Camaro ZL1 rotor with a custom hat made. The iron rotors have a better thermal properties compact to the Carbon Ceramics. Also the Delphi ABS will work better with iron rotors over the Carbons. I used the Bosch ABS on the last cars with Carbon Brakes.


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[CamaroAJ]

Is it possible to get a set of those rotor hats? I have C6 ZR1 brakes and would like to be able to put iron rotors on it for track days.

[OLDFLM]

Any chance we can get the pics enlarged in the thread?

[Stielow]

Any chance we can get the pics enlarged in the thread?


Jeesh... Lillard complained they were too big


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[Stielow]

Any chance we can get the pics enlarged in the thread?


Which ones do you want?


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[camcojb]

Jeesh... Lillard complained they were too big


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Since when do you listen to Charley? :lol:

[Stielow]

Is it possible to get a set of those rotor hats? I have C6 ZR1 brakes and would like to be able to put iron rotors on it for track days.


It would be cheaper and easier to buy these


https://www.girodisc.com/Girodisc-Rear-2-piece-Iron-Rotor-Conversion-for-C6-Corvette-ZR1_p_6847.html

I have never used this I just did a quick google search.


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[cpd004]

Which ones do you want?


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Since you're asking...the bottom pic in post 481. I'd like to see a better shot of the radiator/fan assembly.

Thank you.

[Stielow]

Since you're asking...the bottom pic in post 481. I'd like to see a better shot of the radiator/fan assembly.

Thank you.


https://uploads.tapatalk-cdn.com/20200910/ea7298dc42c668e44825bac4166f1855.jpg


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[Stielow]

https://uploads.tapatalk-cdn.com/20200910/7f2eb58c118a575a7edfd6af7d927d50.jpg


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[Stielow]

Intercooler lines

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[cwylie]

Is that an off the shelf DSE car roll bar or something custom?

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[Stielow]

Is that an off the shelf DSE car roll bar or something custom?


Custom. Sled Alley made it


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[Stielow]

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[OLDFLM]

And the bear took one look at the size of these photos and said "These are just right!"

Thanks Mark!

[F'in mine]

Mark, in few of your earlier posts you show that you're using IImuch vents, one for the diff and one for the fuel tank. It looks like the Rick's tank has provisions for a rear/ top fitting. Is that the only vent you're using? TIA. Let me re-phrase the question, is the rear tank port the only one you're using?