[grparen]

I have put a 1965 421 motor in my 63 Tempest. Motor was a running motor. Lower half of the engine was in good shape so just replaced the main and rod bearings. Top half of engine is rebuilt with #62 heads and a solid lifter cam. Has new stock oil pump and I stretched the spring about a ½ inch. I installed a new manual oil pressure gauge and had it visible during startup procedure. We fired this motor up but did not get any oil pressure registering on the gauge and within about 30 seconds we cut if off. Thinking the gauge might be faulty or that the oil pump needed to be primed, I pulled the distributor and tried spinning up the pump with a drill and homemade shaft. Still no oil pressure reading on the gauge and no resistance at all on the drill. I spun it both clockwise and counter clockwise. I even over filled the oil pan a little to get more volume. I am thinking I must have missed a gallery plug or something else is going on. Before I pull this motor out and disassemble it or pull the front cover, does anybody have any ideas as to why I have no oil pressure?