Originally posted by TXsilverado@Jul 20 2005, 03:01 AM
underdrive pullies make your water pump run slower making your motor run hotter. they also make your alt spin slower. ive seen some people complain of alt voltages as low as 12 amps when they used to run 14 strong. not good if you have alot of electric parts such as electric fans. theres better mods out there for the money.
I asked the same question some time ago and what TX said is the overwhelming response, especially if you're going to e-fans. The $$$ are better spent elsewhere.