Oil pump

I usually use hi volume, with stock bearing clearances. Std capacity oil pan. Std pressure. Been known to add an extra quart for drag strip racing, although now I know that may not be a great idea, due to crankshaft windage. Hi volume is ok, use std pressure. Always worked for me, street and strip. Engine displacement shouldn't make alot of difference. It's the RPM range you want to consider. Hi volume is better for racing, as the bearings need it at high RPM for cooling, and there are greater loading forces.