Are you sure the distributor was reinstalled into the block deep enough to turn the oil pump? It's possible to engage just enough of the camshaft gear to make the distributor spin without hitting the slot in the oil pump drive. Make sure you are turning the oil pump before running the engine again.
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!