Mark the number one plug position and then pull the distributor. No need to bring number one to TDC at this point; we can do that later. Fill with new oil and prime the engine with a priming tool chucked in an electric drill. Spin the oil pump until you see the oil running out of the rockers. If all the rockers are flowing oil, that is a good sign. If there are one or two that are not flowing oil, pull the rocker and look down the pushrod to see if it's clogged. With oil flowing freely, you might want to readjust all the rockers now that the lifters are pumped up.