[chr2002ca]

I've had a bit of trouble with my March pulley system(23050) on my new GM crate motor. First it was a high rpm belt squeek issue(I run Gatorbacks), then, after buying a different alternator bracket(20127) from them to lower the alternator and get better belt coverage on the water pump pulley, the high rpm squeek went away but now I get an occasional screech on startup. Their customer service didn't seem like they wanted to help me out at all(suggested I invest in an electric fan setup, thanks!!!). I guess their system doesn't agree too well with a stock GM big block 7-bade clutch fan. I probably wouldn't buy a March pulley system again. I'd have to agree with the others, an auto tensioner is an important thing.