underdrive pulleys

[91exp sport]

does anyone know where i can get underdrive pullys for a 4.0 L ? I've looked almost everywhere online, so any leads would help.

 

[Alec]

Welcome!

A couple companies made crappy sets, but the 4.0's don't like to be underdriven anyways. I wouldn't do it.

 

[karl_burns]

besides...

What do you really want to live without: power steering? A/C? stereo?

Karl

 

[etc]

What's an underdrive pulley?

 

[huskyfan23]

It's a smaller pulley that goes on either alternator, A/C, or water pump. The smaller pulleys slow down the speed of the belt so it uses less HP to power these accessories.

 

[91exp sport]

actually, the pulleys usually go on the crank and the water pump. putting a smaller pulley on the ac or power steering pump would just make them spin faster, not slow down the whole belt.

 

[plrs x45]

My mustang ran 10.56 at 141mph and NEVER did I put pullies on it. Don't do it!! Pullies do not make sense on an X. These guys here can offer a lot more than pullies and your truck wont suffer. Good luck.