My fresh rebuild, with a high volume oil pump produces 40+ psi cranking. If I remove the distributor and turn the oil pump with a drill, I get about 80 psi.
This is verified with a mechanical oil pressure gauge and the electronic sender from the Holley Dominator ECU.
This is with the oil hot from a oil pan heater using 20-50 semi synthetic oil.
How hot was the oil? I could hear the oil start to boil when I pulled the distributor. I quickly unplugged the pan heater. Lol