Hi volume oil pump

I run a hi-volume pump with a stock pan and 6qts of oil and I have seen 6400RPM and never once sucked my pan dry....that sucking the pan dry is total BS.....hell half of the guys I know that run a deep pan only run 6 qts in it and they have hi-volume pumps and never suck it dry....you only need to run enough oil to cover all the parts and keep the sump covered....extra oil is just extra weight and windage in the crankcase. I don't think a hi-volume pump is gonna fix the problem...first check the sender just because it's easy to do and rule it out....if that's okay then you have other problems. It's either a bad pump relieve or you have bearing clearence problems. How good is this rebuilder? Were new cam bearing installed? Were the rod and main bearing clearences checked when it was assembled.