New Cast Iron Oil Pump pressure low

[Waterloo]

Mandy, what was the pressure when going down the road under a load? And you are running that motor over 1500 rpm's correct? I like to be in the 1600 to 1700 range when dragging a trailer. I have the old style pump, no shim and she is pretty steady at 39 psi. These are low pressure motors, 80 psi seems to be a bit much, I would halve the dimes.

I would also run some gear lube in your oil, Sta-Lube is what many of us use here, or the Walmart brand, in the blue gallon jug, I forget the name, it is the Walmart house brand of gear lube.