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 highly doubt that you'd get 17 extra hp just from adding underdrive pulleys, especially on an LB9. Was the car stock or modified?

Is the article in the current issue? Wouldn't mind checking it out.

February 2005 issue. Page 71

i read the same thing but in gm high-tech performance on there project car blue thunder got 17hp and 13tq at the wheels on a 305tpi. july 2003 volume 9.
i tried to buy the pulleys from jet and i waited 3 months, they just said they were on back order and gave me the run around, so i got my money back and orderd my pulleys from march.

And do the March ones give the same amount of horsepower?

i didnt dyno my car but its the same size pulleys as jet. i orderd mine aluminum powedercoated and it was a 3 peace set, but they also have a 2 peace black steel for about half the price of the 3 peace. i ordered them threw summit and took bout 3 days and i like them