Cam swap cause Oil pressure change?

I did replace the gasket at the filter plate and it was fine until I rev'd it and the pressure pegged the gage, started leaking again. it won't hold over 100 psi I guess.
Something is causing excessive high pressure maybe a blockage somewhere in the oil passages.
Turn the motor reverse rotation right after it's been run.
Maybe you can get the pump to push it out the way it came in.