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Originally Posted by silicon212
I've been running a stock 5qt pan with my HV pump for the last 270,000-odd miles, if that means anything. Then again, I don't rev my engine to 6k, nor do I run a high pressure spring in it.
HV oil pumps are for engines that have increased oil clearances (main, rod & cam bearings, lifter bores etc), high mileage engines, engines designed for sustained high RPM, or engines that have 'leaky' ('variable duration') flat tappets (think of Rhoads lifters for high lift cams that make the engine idle easier). You don't need one in a stock engine. In any case, you will want one for an engine that makes trips above 5k RPM, along with a 6-7 quart pan, or ideally (and expensively), a 22-qt external tank system (also known as a 'dry sump' system).
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I took your advice silicon and I got a sealed power Hv pump for mine with Standard pressure, cause my crank didnt need to be turned but its still worn a little and I need the HV
The HV/HP pump Question was for a buddy of mine.
So he'll need a 6/7 quart oil pan?