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Post Info TOPIC: GM Water Pump Question
South Shore


ONTARIO

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GM Water Pump Question
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How do you distinguish a regular rotation GM V8 water pump from a GM reverse rotation pump? Is it in the casting number?



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dave


TORONTO, ONT

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The pulleys won't bolt up onto each other as the bolt centre is different. Not sure if there is any other way.

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South Shore


ONTARIO

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Dave, Thank you. I have asked around and no one seemed to have an answer for me



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henry


CORNWALL, ONT

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Impeller design should indicate (not familiar with yours) but Ford 5.0L bend the vanes in different directions.



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Fords Rule ! If it ain't designed and manufactured in North America it sucks ! I don't do rice, pasta, fish and chips, sauerkraut, Ikea or other third world motor vehicle !
South Shore


ONTARIO

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Short of disassembling it to see which way the impeller blades point is there a way to differentiate one from the other?

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Lightspeed Mike


BELLEVILLE, ONT

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henry wrote:

Impeller design should indicate (not familiar with yours) but Ford 5.0L bend the vanes in different directions.

 Ford guys, turnips. Chev water pumps have the impellers encased.



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henry


CORNWALL, ONT

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So do Fords brussel sprout......... only 5 bolts to take off, or take through customs and ask for a print out of the X-ray.

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Fords Rule ! If it ain't designed and manufactured in North America it sucks ! I don't do rice, pasta, fish and chips, sauerkraut, Ikea or other third world motor vehicle !
Petebil


ONTARIO

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South Shore wrote:

How do you distinguish a regular rotation GM V8 water pump from a GM reverse rotation pump? Is it in the casting number?

 grooved pulley=regular rotation

smooth pulley=reverse rotation



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South Shore


ONTARIO

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Thank you Petebil, I still have a bit of a problem here with this. The water pump that I have in question has no pulley, just the bare pump................



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fatchuk


ST MARYS, ONTARIO

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try going to rockauto and see if you can match one up in the application pictures.. they have some excellent pics..I sort of thought that all serp driven were reverse and crank belt driven were clockwise..but I am not positive on that.. 



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427CARL


CLINTON, ONT

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https://www.youtube.com/watch?v=AK44aYNHtYY



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