underdrive pulleys
Thread Starter
Heel & Toe
Joined: Oct 2006
Posts: 21
Likes: 0
From: Maryland
underdrive pulleys
Has any one put underdrive pulleys on the engine. If so did you notice if the engine ran hotter or about the same. I think this might be the problem with mine. Changed thermostat flushed system. Does not seem to have alot of flow unless I rev the engine.
Racer
Joined: Jul 2003
Posts: 304
Likes: 0
From: Corinth Tx
I used an undrive pulley worked great but noticed a slight lag in the power steering at idle but I also have hydro boost breaks that run off the steering pump. Most under drive pulleys have a wp pulley as well to keep the coolent flow the same the just slow down the other acc.
p.s. I will sell my underdrive pulley if any one wants it I have an f-2 procharger now so i am not using it.
p.s. I will sell my underdrive pulley if any one wants it I have an f-2 procharger now so i am not using it.
Melting Slicks
Joined: Jul 2004
Posts: 3,248
Likes: 48
From: westland mi
i did, not only did i run hot(even w/aluminun radiator & electric fan) but ran into a lot of dead batteries when stuck in traffic idling. put the stock pulleys backon & both problems went away. never again
Safety Car
Joined: Oct 2004
Posts: 3,926
Likes: 739
From: Youngstown Ohio
I use a 25% underdriven crank pulley, and have no problems charging or overheating. I did change to an electric fan, however, to gain a few HP, but the water pump still has adequate capacity.
