View Full Version : 90 to 94-95 10% Supercharger Pulley Swap

05-03-2009, 08:44 PM
I obtained a 94-95 supercharger and I'm in the process of putting it on my 90SC. I had a 10% overdrive pulley on the stock supercharger on the 90, but when I compare it to the factory pulley from the 94-95 supercharger the difference is HUGE. Way more than 10% for sure.

I know that FORD put a larger pulley on the 94-95 cars as the newer supercharger worked much more efficiently, but can anyone tell me how much my older 10% pulley would now overdrive the 94-95 compared to its stock configuration?

Thanks for your help.

05-03-2009, 09:20 PM
About 3% more for a total of 13% OD.

05-04-2009, 07:21 AM
run 5% at most for right now. that may even be too much and u may have to get an early style pulley.

05-04-2009, 04:53 PM
Agree with thunder. If the car is stock, don't overdrive to 13%. You will just make tons more heat and detonate resulting in lost power and damage.