kev2369

I ran up on a set of underdrive pulleys dirt cheap, so i bought them for my 94. I'm thinking that if i put an underdrive pulley on it, it may effect the boost my car builds. Anyone have any opinions on whether i should go ahead and install them or should i just sell them?

94ford5liter

I dont really see why it would. Underdrive pullies make such a small difference, and it is not like your changing the pulley on the supercharger. Someone correct me if i am wrong, but i think you should be fine.

kev2369

Well i didn't figure it would make a night and day difference, but if it cuts down on boost buildup at all, i don't really want them on there. Because building quicker boost will make more power differences than those pulleys will. Anyone think they can effect the way it will build boost?

mattdel

no change whatsoever

nmerrill

umm underdrive pullies will effect boost. Why do you think a smaller supercharger pully=more boost. underdrive pullies will lower boost

militarymustang88gt

it wont as long as you aint changing the pully on the crank for the supercharger

94ford5liter

/\ +1 I figured as much just wasnt 100 percent positive. Cool car by the way dude.

kev2369

If you're talking about my car, thanks alot. I figured it would have to at least effect the boost. And i'm not much on that.... If the crank pulley turns slower, that would mean the belt is turning slower, and that would mean the charger is turning slow.... So that would be less boost.

nmerrill

Exactly, id just sell the pullies

kev2369

I had to start talking about it to make myself understand it. Its too late to be thinking.... I'm sure i wouldn't see a big difference, but boost is where i make my power and i don't wanna get in the way of that. Thanks alot