HV oil pump vs Stock oil pan
OK, back on track of stock pan and a HV pump.
I think I had the older late 1970's Melling HV hit the pan on my 360 build. A quick dimpling with a socket and it cleared. I made the mistake of putting the Direct Connection High Pressure spring in the Melling HV pump and had over 110+ PSI at 2500 RPM and the older STP oil filter was "EXPANDED" a little bit too. Gauge only went to 110 PSI. This setup may pump the pan dry. It would shoot a stream of oil 20+ feet out of the sender unit threads if the sender was not on the block. OPPS.
Had to drop the pan and pull the spring out. Then had like 60 PSI at 2500 RPM.