Hello all,

I just read in Camaro Performers magazine that with a JET Performance underdrive pulleys, they have seen gain of 17HP and 13-lb-ft of torque at the wheels. That seem pretty impresive to me.... Is is true? I have a 88 GTA with a 305 TPI and automatic transmission completely stock.

-Will it give me the numbers they say if I put these?
-Will I gain HP and torque at every RPM range?
-Do you think JET Performance kit is the best for my car?

I also wan't to put in a new cam for my LB9. 206- to 218-degree intake, 212- to 226-degree exhaust duration, 0.480- to 0.520-inch lift, and a 112 LSA. What would be the price brand and model with these specifications. And what can I expect with this mod?

Thanks!

 

I found this article in February 2005 issue. Page 71

 

It's hard to say dude. It's like flowmaster always quotes power #'s, like their system made x amount of hp on a 396 truck motor. But who knows whats done to the car. All it might have needed was a better flowing exhaust to unlock some lost hp. They might have had a car that was ready for an underdrive setup. I would think if it really netted that big a gain, that more people would have done it. 17hp is not bad for a simple bolt on. And to the wheels no less. I think the only other bolt on you're gonna get a gain like that from is headers. FWIW, let us know if you go ahead with this. i wanna put some shiny pullies on my ride one day, when I get it all cleaned up under there.

Will

 

based on those cam specs, it looks like you want an LT4 hotcam, or similar. Peppy little cam, but you are gonna need a decent tune to get what you want out of it. Also look into some heads that can handle the increased lift.

Will