I finally got all my 350 SBC put together and when I primed it the oil pressure went skyhigh about 65 psi (the gauge is setup where the oil sending unit will be) on low setting on my drill and it bottomed out the guage when I set the drill to high. The next morning before work I picked up a new guage and tried it again that night. This gauge also says the same oil pressure. I know a little dewalt drill wont pump the oil as well as the motor will so Im a little concerned. IS this normal for a sbc to read that high?