Underdrive Pulleys.

[50fanatic]

Hi guys, I just bought a set of underdrive pulleys, new for 35 bucks. They are black powdercoated billet steel alternator, water pump, and crank pulleys. My car has all the factory accesories, and my alternator is a rebuilt(paladium..) and it once had a stereo system, so it could have been rigged for higher amps. But, to be on the safe side, I would like to get an overdrive pulley for my alternator, which is 19.99 from UPR. Will my car run hotter? Will I notice any hair of a difference in rev speed or acceleration?

[frdfandc]

Just leave the stock alternator pulley on and install the other 2 underdrives. You will not have any issues and will save yourself $20.

[gadget73]

If you have charging issues, and still have the stock alternator, swap it for a 3g 130 amp and you should be good. The 3g has much better low rpm output than the stock 2 plug style one.