Quote: I guess if you're using stock heads the oil would drain back easier with the huge openings in the heads. The aftermarket Stealth and Edelbrock heads don't have that, so it's easy to suck the pan dry when running it hard with an HV oil pump.
Once you are at the pressure of the relief spring, the high volume pump does not put any more oil to the motor. It just recirculates more oil from the pump relief valve back to the pan.
