larger crank pulley

[just4bob50]

Hey has any one ever used a larger dia. crank pulley for their supercharger, if so what were your results. Also waht was the difference in dia. between the larger and original pulley.

 

[RacEoHolic330]

I'm getting my 8" pulley tomorrow. Upgrading from my stock 6.87. A larger crank pulley will make the boost come on sooner and will eliminate belt slippage because of the larger surface area. I'm just afraid that I'll be running way more boost than I want to. Might have to get a bigger blower pulley to fix that.

 

[just4bob50]

raceoholic, post what happens when you put it on

 

[89MustangGX]

If you want a cheap crank pulley that is larger -- hit the junkyard and grab one off a truck. The pulleys are quite a bit bigger and probably dirt cheap. I know on my truck I put a stock Mustang one on and it's like a free underdrive.