Quote: If you seize a pump - usually it breaks the hex end off the shaft - My guess is your clearances were not right or you were sucking the pan dry - either way - that thing needs to come apart or it will come apart by itself if you cobble it back together again. Big block oil pumps are pretty stout by design and rarely fail by themselves - usually they fail when junk gets run through them.
But I can't rule out a pump problem. But the pump may have failed from the bearing debris.
