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Interesting , just did a build with a 63HP and didn't experience any of this .



You sure you have an HP and not and HV they sell 3 stock, High volume HV and High Pressure HV.

When I went to the speed shop with the HP he said I will not sell them just HV or stock. He said his book said industrial motor only with canister type filter.

And yes I checked the bypass even put a stock spring in which did not help much at all.

Put one of my used mopar high volumes on and it was fine so then got a new HV and it was fine the gears are totally different!


Well I see the melling hp is just a stock pump with stronger bypass spring??
This one years ago had tall gears like a high volume but real sharp?? may have been a Federal Mogal bin a while but it was dangerous. took out 3 140 hp oil gauges as well as filters.




I am 99% sure it was a HP , will have to check the invoice now ... I t did have a leak and I had to lap the plate the oil filter attaches to because it looked like it was surfaced with a rock. Standard height stock looking rotors , never seen one with the sharp rotor till someone posted the picture of the new style that is coming out?