F.A.S.T. Racing.

[Chevy454]

COPO Pete's ZL-1 Camaro vs. the Yellow Submarine

Pure Stock Camaro heavy-weight shootout!

[71-LS6]

Wow Rob, I didn't realize you were 1-1/2 mph faster than Pete. Was that your best mph?

Chris, roll that Nova out next year, it's been too long!

[Chevy454]

[ QUOTE ]
Wow Rob, I didn't realize you were 1-1/2 mph faster than Pete. Was that your best mph?

[/ QUOTE ]
Umm, don't think so? I had a few over 118 that weekend...you'd think the scenario would be *opposite* wouldn't you? I can't figure it out, as Pete & I have talked about it for years...I know he's had some valvetrain issues that sucked some MPH from his car, that he's gotten back...but he'll out 60' me EVERY TIME, and I'll usually pick it up out the backdoor...I think his fewer pounds over the nose & softer bottom end power (camshaft) helps him out of the gate, and being quicker he effectively has less time to build mph, but...

[71-LS6]

Still a little confusing for me, especially when you figure the ZL1 has got 850 cfm to your 780 cfm.

[John Brown]

Maybe the mph differences are due to the rear gears.....

[VintageMusclecar]

My $.02, if I may

I think Rob pretty much nailed it...I wouldn't be at all surprised to see that the L72 cam works better upstairs than the ZL1 cam does when running unported iron exhaust manifolds. On the other hand, the bigger ZL1 stick probably softens up the bottom enough to make the car considerably easier to launch, and when you consider the weight savings of the beercan engine, that would explain why it 60's well.

A side-by-side comparison of the 2 dyno sheets would be quite interesting.

Just some random thoughts...

Eric

[L78racer]

Manifolds and exhaust systems being equal, maybe the 780 just works better with this type of 'restriction'.