- Jul 12, 2017
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When I was younger, (not knowing ) underdrive pulleys were a cool mod to put on. Now, not so sure. Just curious what you guys think?
For fox-bodies, I'm not a fan. I would not do them again. Foxes start out with barely adequate charging and cooling. Underspinning the PS or A/C is not a problem, though. Once you've significantly modified the cooling system, it probably isn't, either. However, I've learned some things about the alternator recently, and it seems like the people who are doing it right all compensate by spinning the alternator with an overdrive pulley on the alt or the crank, anyways. So, I don't ever plan to underspin a alternator again.