Underdrive Pulley
Team Owner
Joined: May 2005
Posts: 23,682
Likes: 9
From: Flagstaff Az.
I think its worthwhile if you are going to have to pull the crank pulley or have the engine apart for some other mod. I had it done with the H/C pkg., but had to have it removed when the Vortech went on. I think Andy said it was worth about 8-10 HP.
Burning Brakes
Joined: Mar 2003
Posts: 1,156
Likes: 2
From: Arlington VA
This is a worthwhile mod if you coupling it with a H/C package because you are already working in the area on the crank pulley and the UD pulley compliments the H/C package. Otherwise, I would not fool with it as the gains are minimal for the amount of effort it would takes to change one of these out. There are simply better mods out there for less money and effort.
