Hey guys, just got my ASP underdrive pulleys in. First off, will the alternator pulley really help out much or is it not worth the install? Also, I have a 145 amp alternator on my truck right now, what size belt will I need with the underdrive pulley(s)? I tried to do a search but didn't get any results.

 

if you are using their pulley, then use whatever belt they recommend, at that point the size of the alternator is null and void

 

Cool, thanks.