69 C10 big block
Belt squeals at high rpm. PS pump was misaligned so I replaced the pump and brackets only to discover it's actually the fan/alternator belt that's squealing. Oh well, now I have a new PS pump.
This is a brand new belt, seems to fit well. Alternator is aligned, tension is good. Tried belt dressing, no help. I don't know what else to try. Is there a high end belt that won't slip? Or a better alternator pulley? It drives me crazy!

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