Yes, I finally did back to back dyno pulls comparing a fox style TB setup to a 94-95 setup. We've all wanted to see the results of such a comparison and I did it today. I tried to minimize the differences between the two pulls as much as I could. The only change between each pull is the TB and inlet elbow, I used the same air filter and inlet tube on both setups. The fox TB was a 75mm and the 94-95 setup was a 65mm. I would have liked to do 75 on both but I didn't have a larger 94-95 one to do it with. testing was done on an AWD dynojet dyno. Obviously the engine has loosened up a little since the last time I dyno'd it as I have more miles on it now. It was virtually brand new when I dyno'd it last. I will be dynoing the car again in a few weeks after I put on my new AFR 185 comp heads, probe shaft mount rockers, MAC 1-3/4 ceramic coated headers, and Dr. gas 3 to 2.5" X pipe that I just bought from a member here.

On the dyno:







Here's what everyone wanted to see... I'm convinced that the fox is worth more power, even with the difference in size between the TB's. The car was run at FULL temperature (190*) with 90* inlet air temps on both setups, no ice or shortbelts were used. These are true unaltered results. Run 2 was the fox TB, run 3 was the 94-95 style. The car made 355/365 STD last year with the 94-95 setup. The graph is hard to see, I'll try and get better scans later.


SAE


STD


I can't wait to see how much power I see with the new heads and exhaust.

I have to say thanks to the great students and staff at Wyotech in Blairsville where the car was dyno'd.