After I put in new pistons and rings and cleaning the oil pick up screen I took off the plate on the oil pump. Mine was in good shape so I took a piece of plate steel and sand paper and smoothed it flat. Then I packed the oil pump gears with vasilene with a after market gauge tubed in with dash gauge and just cranking it over I had about 15lbs of oil presssure. No plugs in. L-37.