Quit running the engine until you discover what's going on. Just remove the distributor and use a piece of 1/2" steel round stock with a screwdriver shaped tang ground into the end to spin the oil pump with a drill motor. Watch the oil flow and figure out where the restriction is.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!