Underdrive Pulley??

I have a semi large stereo in mine, when I just did the underdrive pulley my voltage dropped tremendously. So I bought an overdrive alternator pulley which put it right where I was with stock pulleys.

where you get that pulley from?

I'm interested in the overdrive alternator pulley... might keep me from uprgrading to a bigger alternator with e-fans.

I bought my overdrive alt from summit!

let me know how you like them if you get them.. i have been interested for a while on the u d pulley set up

I think Summit sells a set with UD crank and OD alternator pulleys.

hmmm tempting...

so is the over drive alt pulley bigger or smaller??? then the stock alt pulley???

UD crank is smaller, OD alternator is smaller.

Quote:

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Originally Posted by GasGuzzler

UD crank is smaller, OD alternator is smaller.

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We're back to the driven vs driving issue again...