Project "Payback"

[Vegas69]

Thanks Ron, it definitely makes it interesting for me to compete with such old technology. I have to be honest, everybody has underdogged me for so long for running a big block chevy. In many ways, I really think it's an advantage in these multi events. The extra nose weight over the aluminum block LSX stuff in autocross is really the only negative I see(75-100lbs). The amount of torque and engine braking cancels that out in IMO. My engine make a lot of average power. I'm making 604 ftlbs at only 3700 rpm. I'm still making 631 hp at 6800 rpm(Redline) and over 500 ftlbs at 6700 rpm.

So, my average power from 3500-6800 is:

581.1 hp 598.13 TQ

Peak:

666.7 HP/6200 RPM 641.1 TQ/4700

Jason Pettis built me one hell of an all around engine that is very streetable. We discussed in great detail what I intended to do with the car and he nailed it. End of story.

[Sieg]

Impressive numbers.

Stay the course, '69 Camaro's are muscle cars and Yenko's are a historic American icon. HP to weight ratio is HP to weight ratio. Hi-tech HP is cool but not required as without traction control and proper suspension setup there are thresholds.

I'd much rather out prepare and drive someone than win with computer assistance and money.

Payback is a great modern day representative of the true Camaro heritage IMO.

Solely for conservation and environmental reasons fuel injection for the ZL1 could be an acceptable option. But good suspension and setup will deliver faster times with Iceman at the wheel.

[CrossRamRich]

Damn!!!! Dave was sleeping! Better start practicing for next years beer shotgun shootout!!!! I am ready!

[Vegas69]

That is one race I'm not winning but I'll gladly take 2nd.

[Roadrage David]

Dond worry hp is hp and torque is torque.
you cant change the laws of fisics. we are secredly working on a car called ""Road Force One"" it wil be a GT road racer but one that is stil capable to drive on the streets. its engine is a All pontiac Ia2 aluminium Pontiac engine. witch wil take all the origenal injun,s engine parts from the 60,s and 70,s.
the engine wil have 730 hp 700 lbs feet of torque 7300 rpm red line and a one of a kind vari lift system(1,18 roker ratio below 3500 rpm/1,67 above) witch wil give the engine a torque curve of 5000 rpm!!!. the rocker system wil give the engine a 20* bigger cam without loosing drivenilety, so its old technolegy put in a new jacket and with newt tech parts divelopt for the old engine disighn. cant think of a modern ls7 engine witch wil be able to compeat with that.

Originally Posted by Vegas69

Thanks Ron, it definitely makes it interesting for me to compete with such old technology. I have to be honest, everybody has underdogged me for so long for running a big block chevy. In many ways, I really think it's an advantage in these multi events. The extra nose weight over the aluminum block LSX stuff in autocross is really the only negative I see(75-100lbs). The amount of torque and engine braking cancels that out in IMO. My engine make a lot of average power. I'm making 604 ftlbs at only 3700 rpm. I'm still making 631 hp at 6800 rpm(Redline) and over 500 ftlbs at 6700 rpm.

So, my average power from 3500-6800 is:

581.1 hp 598.13 TQ

Peak:

666.7 HP/6200 RPM 641.1 TQ/4700

Jason Pettis built me one hell of an all around engine that is very streetable. We discussed in great detail what I intended to do with the car and he nailed it. End of story.

[Vegas69]

Not wanting to spend $4,000 swapping over to a t56 magnum, I thought I'd take one last swing at this tko 600. I did a bunch of research and found one blaring similarity with happy racers. Clutch Air Gap. I've seen claims up to .080 needed for a smooth shifting 600. So I went to work and was able to get approx. .050. That puts the engagement at the very top of the pedal travel and barely any air gap between the throwout and pressure plate. It's not getting any better with this clutch. I ended up using an allen wrench as getting into the starter hole with some feeler gauges wasn't my idea of a good time. You can see the allen wrench in the 5 o clock position.



Verdict: It still shifts like a John Deere tractor. I'm running the Mopar event at the speedway(Autocross/Drag Race) in April and then it's time to go 56 Mag. Hopefully I'll be able to hit 3rd and lay down a decent 1/4 mile time.

[GregWeld]

I complained at Bondurant for 3 days about the crappy 2/3 shifts in the Grand Sport Corvettes with high rpms...

[Sieg]

How thick is the bump stop on your clutch pedal? I spent too much time on my back gazing under the dash today.

[Vegas69]

It's a factory bump stop. I wouldn't want the clutch pedal any higher but I know where you are going....

[Ron in SoCal]

J/K Bro! Time to do some cuttin'