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under run pulleys

993 Views 4 Replies 4 Participants Last post by  Scotty1
Hey, I purchased an under run pulley set, for the 5.0. It came with an under-run crank, an OVER-run water pump, and a stock sized alt. Is this correct, or should I do some complaining? Thank You.
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It's a 94. Why would I not want to think about changing the alt. pulley? And why an over- run water pump? Doesn't that defeat the purpose of an under-run pulley set? I know if you're running it hard you want extra cooling, but just normal driving, it should not be an issue, should it?
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