New to the site with my 61 Impala ragtop...

[61ragtop]

Hello there, I am kevin and own a 1961 ragtop Impala. Here are my specs....

ENGINE
-383 stroker 442hp/470ft lbs of torque )
-Chevy 350 bored 30 over and stroked to 383ci
-Scat crank 3.75 Stroke Cast 9000 series
-Scat 5.7 forged I beam rods with 7/16 arp cap screws
-Forged Flat top Probe Sportsman Race Series Pistons
-Comp Cams Roller Cam Duration-Intake 230deg Exhaust 236deg @ .050 / Lift Int .510 Exh .520 and 110 lobe separation
-Air Flow Research 195cc Heads 74cc chambers
-9.7:1 compression
-Headman Block Hugger Headers
-Holley Fuel Pump
-Speed Demon 750cfm Carb Vac secondaries
-Polished Air gap Intake
-Edelbrock aluminium water pump
-MSD Plug Wires
-All Bolts Are ARP
-Mini Starter
-Edelbrock double roller timing set
-Comp cams roller lifters
-Crane cams roller rockers
-Full Mandrel bent Flowmaster American Thunder exhaust With 50 series deltaflow mufflers


CHASSIS
-700r4 tranny
-3170 rpm Edge Racing 9" converter
-B+M super cooler tranny cooler
-9 inch ford rear end
-Center Section With Motive 3.89 Gears And Auburn Pro series limited slip
-Air lift easy street air ride kit
-4 wheel disc brakes
-18x7 in front and 20x8.5 rear Intro Twisted Vista Wheels
-Boxed trailing arms in rear by spirit engineering

And the dyno specs....

Intake center line 105 1/2
jets 76 front 85 rear
vac sec spring short yellow
timing 35 deg
RPM----HP---TQ---A/F--Vol Eff%

3900 - 328 - 442 - 13.3 - 97
4000 - 340 - 447 - 14.0 - 97
4100 - 356 - 456 - 14.2 - 97.3
4200 - 370 - 462 - 14.0 - 97.5
4300 - 381 - 465 - 13.9 - 97.5
4400 - 390 - 465 - 13.9 - 97.4
4500 - 397 - 463 - 13.8 - 97.4
4600 - 404 - 461 - 13.7 - 97.2
4700 - 410 - 458 - 13.8 - 97.1
4800 - 416 - 465 - 13.8 - 96.9
4900 - 422 - 452 - 13.8 - 96.7
5000 - 427 - 448 - 13.8 - 96.3
5100 - 430 - 443 - 13.8 - 95.8
5200 - 433 - 437 - 13.9 - 95.2
5300 - 435 - 431 - 13.9 - 94.9
5400 - 436 - 424 - 13.8 - 94.6
5500 - 437 - 418 - 13.9 - 94.3
5600 - 439 - 411 - 14.0 - 94.0
5700 - 440 - 406 - 13.9 - 93.5
5800 - 442 - 400 - 13.9 - 92.8
5900 - 442 - 393 - 14.0 - 92.1
6000 - 440 - 385 - 14.0 - 91.5

[Bryce]

sweet car. looks really good.

[waynieZ]

Nice car!

[GregWeld]

First -- WELCOME! Nice Impala!

I have one question - and I'm no "tuner".... but those A/F numbers look pretty "lean" up in the RPM band... and leaner yet at peak torque...

Anyone??

[70rs]

Welcome aboard!! Very nice ride!:thumbsup:

[awr68]

Welcome!! Nice ride!! :cheers:

[61ragtop]

First -- WELCOME! Nice Impala!

I have one question - and I'm no "tuner".... but those A/F numbers look pretty "lean" up in the RPM band... and leaner yet at peak torque...

Anyone??

I have been told the same on another forum and questioned my engine builder about it. I was told It had to do with how the dyno pull was performed If I recall correctly

[214Chevy]

I love the Impala 61's & 62's simple for the smaller body. I want a 62 so bad. keep her looking good. :hail:

[T-Type]

sweet!!!! love the early 60's impala's.

[Radlark]

Very clean ride my man!!:thumbsup:

[61ragtop]

Thanks for all the positive comments!!!:D

[GregWeld]

61Rag --

It certainly seems to make nice power that's for sure!

It's just that most all of my dyno pulls have shown 12.5 or 12.7 something like that at peak torque numbers ... When I saw your leaner 13.8 and 14.0's it made me wonder is all.

I love your car - just killer stance and that drop top is so dang nice looking!

[61ragtop]

61Rag --

It certainly seems to make nice power that's for sure!

It's just that most all of my dyno pulls have shown 12.5 or 12.7 something like that at peak torque numbers ... When I saw your leaner 13.8 and 14.0's it made me wonder is all.

I love your car - just killer stance and that drop top is so dang nice looking!

I do not quite remember the exact reason for it but I just assumed he knew what he was doing, as I am a rookie when it comes to this tuning stuff. I to question it from all the info I have read in books and online.

Thanks for the compliments Greg, I just might try a jet change and see if I can feel it judging by the seat of my pants feel test:D

[XcYZ]

Great car, Kevin. :cheers:

[Stuart Adams]

Very nice, welcome.

[windycity1]

Welcome fellow Impala owner, very nice. How do you like the Edge converter. I just ordered one for my 65 SS with a Merlin 540. www.photobucket.com/Dantesrides:thumbsup:

[61ragtop]

Welcome fellow Impala owner, very nice. How do you like the Edge converter. I just ordered one for my 65 SS with a Merlin 540. www.photobucket.com/Dantesrides:thumbsup:

Andre is GREAT to deal with and the converter seems good. It feels no different than my 12 inch 2400 stall i had in it at light throttle but is much meaner when I punch it!! Not as good as I have been told my combo should be after I got a better converter but I can not say for sure that it is due to the converter. I just wish I could break em loose a lot more with out using the brakes.:thumbsup:

[61ragtop]

Great car, Kevin. :cheers:


Thanks Scott! Oh and hey I have not received any email notifications for any of these posts still so the problem is still there.

[RECOVERY ROOM]

Nice car...My favorite Impala:thumbsup: