Originally Posted by Bob Stinson
Originally Posted by R/T1968R/T
Just fixed a 440 that had a marine impeller on the water pump. The impeller was made to spin backwards. Double check the direction its facing. Here's a reverse one!


FWIW I put a Milodon HV pump on my car recently and it's reversed compared to the one I took off. I then compared the one I took off to two other old ones I had and they are all oriented the same way.

The Milodon part number was clearly marked for CW rotation. I got it from Mancini. https://www.manciniracing.com/brbhigvolwat.html



Both of those pumps have the impeller blades at 90° to the centerline of the shaft. They would both perform equally whatever direction they spin. The orientation of the arms holding the impeller blades is irrelevant.

[img]http://i.imgur.com/boeexFms.jpg[/img]
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