basically this is a rolecall for those running them,,as i just scored a set off gee-bay for 50.00,and im wanting feedback from those running them..pro's/cons..positives/dislikes...this is them..next week im getting them put on as well as my viper fan..

 

Ive been running the same 3pc pulleys since 97. Not for everyone Long stop lights have to give her a bit of rpms so it doesnt run off the alt. Been through a few batteries. March use to be the only ones with an alum 3pc for our trucks, not sure if they still are the only ones. Alum u/d pulleys will give slightly larger gains than steel will due to less rotating mass. With only 14" open K&N & Eddy hdrs, 3.55 grs stock wt, my Indy saw .12sec et reduction on the 1/4m.