My B1 with pushrod oiling has a .060 oil hole in the bushings (World aluminum block) and makes around 65-70 psi at 7400rpm. It does rise with rpm though. I only really have about 20#'s when the oil is hot at an idle, after a run. So....I can't say for sure that that's your issue, but it couldn't help tha situation and the oil pressure should go up with RPM.