Hi volume oil pump

340mopar said

There is nothing good about running a bigger pump than you need. It takes more HP, it puts more load on the cam gear, puts more load on the timing chain, makes more heat in the oil bypassing all of the time and can aerate the oil.

This is all physics of a hydraulic system, which is what an oil system is.

Here is something else to consider with pumps, as pressure goes up volume goes down. The highest flow you will get out of a pump is at zero psi.


Chuck

Click to expand...

I agree 100%. HV pumps are for large clearance engines. If your clearances are right, you give up power for the sake of heat. Unless you enlarge all the oil feed galleries, especially the pickup side, they will limit the oil system's total volume. Too much "sucking" with a small pickup leads to aeration. The factory stuff can handle well beyond 6500 in a small block. In truth, the HV pumps can get the majority of your oil stuck up in the valley, above the cam and crank. The cam loves that, but all that oil has to flow past the crank. You are creating windage too.