I bought a set of March power pulleys for 79-93 stangs, and as I was installing them I noticed a few things.
1) The water pump pulleys are the same size. Why? Shouldn't it be a little larger than the stock pulley?
2) I have a 3G alternator and the stock pulley on it is quite a bit larger than the supplied march pulley. The pulley was of course designed for the stock alternator which it is correctly sized for. So, I left the stock 3G pulley on but I wasn't sure if I should. The car seems to run and charge fine with the stock 3G pulley. The march pulley would spin it faster producing more amps, but I don't know if it would spin it to fast.
1) The water pump pulleys are the same size. Why? Shouldn't it be a little larger than the stock pulley?
2) I have a 3G alternator and the stock pulley on it is quite a bit larger than the supplied march pulley. The pulley was of course designed for the stock alternator which it is correctly sized for. So, I left the stock 3G pulley on but I wasn't sure if I should. The car seems to run and charge fine with the stock 3G pulley. The march pulley would spin it faster producing more amps, but I don't know if it would spin it to fast.