I would never run a HV pump.
I wore out two brand new camshafts along w/3 -4 distributer gears.
From the engines I have built I never had 10 psi per 1000 RPM ,I think that is a SBC rule anyways.
If you don't need the HV,I would not use it. You lose HP ,creates undue wear on camshaft & distributer gears
I never spun a rod or main bearing running 40-50 PSI oil pressure @ 6500 RPM sometimes up to 7000.
I told Mike Kirby one engine I was running was only getting 45 psi (oil pressure) @ 6500 RPM,he said that was fine,hummm,never spun a bearing.,So I guess??
Next engine I plan on using a standard volume oil pump w/a stiffer reg. spring.
MBHD
