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turbojimmy's avatar
turbojimmy
Explorer
Jun 17, 2014

1984 P30 454 Shredding Alternator Belt

As some of you may recall, I put a GM Performance crate 454 in my Allegro (I bought the rig with a blown engine). I swapped over the brackets and pulleys from the blown engine to the "new" engine. The only exception is the smog pump. The crate engine didn't have one, and had the appropriate sized belt to account for the lack of a smog pump.

Since the engine was used, and the belts too, I cross-referenced the old NAPA belt to a Gates 7470 (the NAPA belt said 7470 on it, too) and put a new belt on it. Well after about 30 miles of driving the new belt is trashed. The edges are chewed up and it's missing a lot of teeth.

It appears as if everything is lined up properly and the pulleys look good. Can overtightening the belt cause this? It kept loosening up and slipping so I made it pretty tight using a crowbar. I've ordered 2 more belts to experiment with but they're pretty hard to come by.