water pump question?

shttygtstang said:

i think 8830 is saying on the crown vic the impellers on the inside would face the oppsite direction so it would flow the other way but still the crank shaft would move the same idunno im lost now

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Michael Yount said:

ECU said - "it doesnt matter which side of the pulley the belt is touching, its going to spin the same way."

Not sure what you meant, but with a serpentine, if you come straight up from the crank pulley (belt leaves the right side of the pulley at 3 o'clock) to the water pump (belt hits the water pump pulley at 3 o'clock) such that the ribbed part of the belt is driving the pump, that will rotate the water pump in the same direction as the crank pulley - which is the wrong direction for a stock 5.0 HO water pump. If it's a stock 5.0HO water pump, the serpentine must drive the pump with the back of the belt (the smooth part) -- that assures the pump turns in the opposite direction of the crank which is how it's designed to work.

88306 - you're thinking about it correctly - if you run the belt the way you described you need a standard rotation pump, not the regular reverse rotation pump that comes on the Stangs. Unfortunately, I have no idea if the Vic pump is standard rotation. Are you gonna find a ribbed pulley for the pump? That should eliminate the chance for squeal if you have it tensioned properly.

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