460 RHS engine build.. dyno tomorrow.

[Steve1968LS2]

Ok.. so a few days of machine work at Nelson Racing followed by three days of building and I'm dynoing the 460 RHS engine tomorrow at Westech Performance.

Any guesses?

The 454 made 650 there and this one should make a bit more due to the better heads and a slight bump in compression (11.5:1)

http://i56.tinypic.com/2ppn5hh.jpg

It was a very detailed build, we flowed the Mast heads and then modded the valves to give more flow in the low to mid range area.. should be a torquie sucker. We weren't going to the "killer magazine number" but instead stayed with a hyd cam with a rather mild profile (touch bigger than the one in the 454).

http://i56.tinypic.com/4idijk.jpg

[ProdigyCustoms]

Depends on camshaft?

[Steve1968LS2]

Depends on camshaft?

247/263 .624 lift on a 114 LSA (installed at 110.5)

[ArisESQ]

I'll guess it makes around 680 to 690. Which is an absurd amount of n/a horsepower!

Super cool motor. Is it for penny??

[Autokraft]

I'm going with 680

[214Chevy]

In number terms...I'll say 700 hp. In word play...I'll say it'll fly like a bat out of hell!! By the way it is oh-so beautiful. May I ask, what cfm size throttle body are you using?

[Mkelcy]

http://i56.tinypic.com/4idijk.jpg

Out of curiosity are you still running the 21st Century headers? If so, you may run into issues with the oil filter adapter on the Autocraft pan. In my project, I had to make the output/input for the filter entirely within the adapter to get clearance for the number 7 tube on the headers. Take a look here for what I'm talking about: http://www.pro-touring.com/forum/showpost.php?p=707562&postcount=108

[ProdigyCustoms]

Because of the 114LC and worked heads, guess 670HP / 570TQ

[Steve1968LS2]

I'll guess it makes around 680 to 690. Which is an absurd amount of n/a horsepower!

Super cool motor. Is it for penny??

Yep.. it's my "last" engine and it's been a long time in planning. although it might come out one more time for a revised oil pan I've been sketching and maybe to add the oil squirters.

But in all honesty.. this engine has all top shelf stuff.. no place to really improve.

[Steve1968LS2]

Because of the 114LC and worked heads, guess 670HP / 570TQ

You're torque is way low.. my 454 made 625 lb-ft :D

[Steve1968LS2]

Out of curiosity are you still running the 21st Century headers? If so, you may run into issues with the oil filter adapter on the Autocraft pan. In my project, I had to make the output/input for the filter entirely within the adapter to get clearance for the number 7 tube on the headers. Take a look here for what I'm talking about: http://www.pro-touring.com/forum/showpost.php?p=707562&postcount=108

Yes to the 21st Century stepped headers.. and the oil adaptor could be an issue.. BUT.. when the engine goes into the car the oil filter adaptor will be switched over to a Canton AN adaptor (same as I used before) since Penny has a remote filter. This just makes the engine easier to plumb on the dyno.

But thanks for the heads up.. since you mentioned it I'm going to see if I would of had the same issue. :thumbsup:

[Steve1968LS2]

In number terms...I'll say 700 hp. In word play...I'll say it'll fly like a bat out of hell!! By the way it is oh-so beautiful. May I ask, what cfm size throttle body are you using?

On the dyno it will be a FAST 102mm.. on the car it will be TBW 90mm unit that has been custom ported my Mike Norris. Wish it were bigger but it is what it is.

[Steve1968LS2]

I'm going with 680

Great pan.. Tom was really impressed and said he's going to order a couple from you for the shop.

I had to mod yours a bit to clear my front rack.. and I added a bung for an oil tep sender.

I need you to send me a replacement sticker.. had to remove it to weld.

[ProdigyCustoms]

I might be wrong but I am guessing the 114LC and bigger heads hurt torque. Guess it depends on how sucsessful the low number work was.

What cam was in the other motor?

[Steve1968LS2]

I might be wrong but I am guessing the 114LC and bigger heads hurt torque. Guess it depends on how sucsessful the low number work was.

What cam was in the other motor?

Just a touch smaller with less seperation due to the cathedral port heads..

The 114 was installed at 110.5 .. should help and the 1 7/8" headers will move up the torque as well.. Pretty sure my last cam (on the 454) was 114 set on a 111.

Too many numbers, can't keep them all in my head. :willy:

[Vegas69]

Why aren't you going to dyno it with your intake? I have no clue what you'll make but I'll guess 672 hp/621tq.

[GregWeld]

652 TQ and 695 HP (but HP number depends on what you're willing to rev it to).

No matter what it makes -- it is killer (on paper) and I hope it works even better than your best laid plans!

:thumbsup:

[Rybar]

I guessed your 454 motor on the button last time. :yes: I'll say 675 hp and 630 tq.

This is an insanely killer motor, please upgrade it down the road so you can sell it to me :D

[67ragtp]

665hp / 644ftlbs killer engine :hail:

Rich

[Steve1968LS2]

Why aren't you going to dyno it with your intake? I have no clue what you'll make but I'll guess 672 hp/621tq.

Huh?

Are you talking throttle body? If so then it's because most dynos, including this one can't run TBW stuff yet.

Once in the car will be chassis dyno tested to see what the car makes, but that's a different topic all together :)

[Steve1968LS2]

652 TQ and 695 HP (but HP number depends on what you're willing to rev it to).

No matter what it makes -- it is killer (on paper) and I hope it works even better than your best laid plans!

:thumbsup:

To a point.. if the cam/valvetrain is "done" by 6200 then it won't matter how high we spin it (which is why a solid would have made more..)

I will just be happy if it runs nice.. I already have plenty of power, but it's fun to speculate.

[GregWeld]

True enough Steve. When I just dyno'd the 406.. we discussed what RPM to go with. My thought was "my tranny shifts about 6000 rpms... so why go beyond that". So that's what we tested to. In fact, when we were discussing the build - we talked about a rev kit etc and I said - nah - I'm not revving it to the moon so why bother. I wanted TORQUE the rest will take care of itself. :yes:

[Vegas69]

Not to hijack Steve's thread Greg but I have that answer. It's nice to be able to rev past redline in racing. I used to hit the rev limiter constantly with my old engine and 6k redline. My new one peaks at 6200 but I rev it to 6800 safely. I rarely hit the redline.

[GregWeld]

Todd --

You have SOLID lifters.... don't try that with hydraulic rollers... :D

[tones2SS]

I'll guess 675 HP and 656 TQ.
Killer engine Steve.:yes: :thumbsup:

[Steve1968LS2]

Drum roll....

Now I forgot my small camera at the dyno so no video yet. I also shot the run on the screen so you can see all the numbers as well as the vid in the dyno room. I will also have the list at various RPM along with all the BMEP numbers.

So.. the best pull was...

719.5 hp
662 tq

Corrected numbers, pump gas, 28 degrees of timing.

On this pull we lugged the dyno down low, it was a bit rich but we made over 400 lb-ft at 2.500.

Peak hp was at 6.200 and the engine easily pulled to 6,700 with no float. Pretty sure it could pull to 7,000.

Good BMEP numbers, which show the heads were really working well, especially in the middle range.

Also, this was a "hero" pull.. we were nailing down consistent 705/708 pulls and let the engine set for 5-10 minutes and then made this pull.

Should be enough.. lol
http://i52.tinypic.com/2l8izps.jpg

[GregWeld]

Eeeeeeeeeehhhhhhhhhhhaaaaaaaaaaaaaa

[camcojb]

gonna be a handful.................... :wow:

[Vegas69]

Holy shiat, those are some big numbers! Looks a little peakier than the 454.

[67ragtp]

WOW! :wow: Who needs boost when you can have that, killer numbers, better buy more tires.

Nice job Steve

Rich

[Steve1968LS2]

Holy shiat, those are some big numbers! Looks a little peakier than the 454.

Yea, about 70 more peak hp and 40 peak tq.. I have an overlay of the two I will post.

I credit the large gain to the heads, a tiny bit more compression and porting the FAST 102mm intake. The headers and the TB were the exact same ones.

[ProdigyCustoms]

That is pretty damn strong. Glad to see the heads work better then I thought as we just got our Mast heads for Unfair. I really expected them to suffer on torque but obviously Mast has done their homework.

[DFRESH]

Rock Star

[Steve1968LS2]

That is pretty damn strong. Glad to see the heads work better then I thought as we just got our Mast heads for Unfair. I really expected them to suffer on torque but obviously Mast has done their homework.

You need to talk with me about the intake valves.. they made a HUGE difference in the flow and where the high flow numbers were.

[Steve1968LS2]

Rock Star

Wow.. coming from you that's quite a statement... :rofl:

[Vegas69]

That's a big deal coming from the guy who gets his ass kissed the most to the guy that does the most ass kissing. :rofl: :rofl:

[Rybar]

Ok Steve, this engine is seriously :drool: :drool: :drool: :drool: :drool:

I want one :D

[tones2SS]

WOW! :wow: Who needs boost when you can have that, killer numbers, better buy more tires.

Nice job Steve

Rich

You said it Rich. That graph is a thing of beauty. That horsepower line just goes straight up and isn't looking back. Bad Penny is going to pull like a freight train!!! Congrats Steve.:thumbsup: :cheers: :cheers:

[Steve1968LS2]

Video:

63BNiNjoGjI

[Rybar]

That is just sick Steve. :omg:

I wonder if Todd will finally give up on the BBC after seeing this :lol:

[Steve1968LS2]

That is just sick Steve. :omg:

I wonder if Todd will finally give up on the BBC after seeing this :lol:

No.. he is far to stubborn.. lol

BBCs are still really cool.. heck, I'm building a 540 right now for a story.

[Vegas69]

Hey now, I'm not against LSX motors, just not in my 69. :unibrow: That's one awesome engine and with a hydraulic cam to boot.

[Steve1968LS2]

Hey now, I'm not against LSX motors, just not in my 69. :unibrow: That's one awesome engine and with a hydraulic cam to boot.

Yea, too bad I'm too lazy for a solid lifter deal.. lol

Then again, I need more power like Stielow needs more driving lessons.. :yes:

[LowchevyII]

thats one mean beast, Steve. Cant wait to see it in action in Penny. gonna be sweet! :thumbsup:

[Rybar]

Todd, one thing I definately give BBC's credit for is the sound they make. I guess both motor tyles have thier ups and downs.

Steve, in the future is Mast going to be offering these motors as a crate with the RHS block?