underdrive pulleys?
 

i have a 2002 silverado and i was lookin at getting underive pulleys... does anyone out there have some and if so let me know what you think of them because they are just a bolt on.... thanks

RE: underdrive pulleys?
 

If you have a 5.3, forget it unless you whish to have them custom made as I did ($$$). You can look at JBL, SLP and Edelbrocks and all are for the 4.3L even if they state they are for the 5.3L The PROBLEM isn't that they won't fit, it is that you will so deplete your alternator/AC ability that you will be replacing batteries like every 6 mths. Also, the Crank pully isn't balanced for the 5.3L. I would suggest getting more HP/MPG from other areas. You can read my "SO YOU WANT TO GO FAST," post for some Ideas.
GL
Greek

RE: underdrive pulleys?
 

makoltd,
i have a 05 silverado with a 4.3l v6 and i got a friend that is selling his 93 s-10....he has a under and over drive pulley....his motor is also a 4.3l......do u think it will work??