oil pressure disappeared.

67Dart273 said
Don't "just" do that. Take the pump apart, it might have cracked an O ring, and makes sure proper gaskets and O rings are in place. Seems to me there is one on the snout where it goes into the block, plus the block to pump gasket, and a large dia. O ring where the cover mates. ALWAYS remove filter when trying to prime as it relieves the head pressure on the pump and makes it easier to pick up and prime.

Any possibility the hex is damaged?

YOU MAY HAVE cracked the pickup tube and it's suckin air

Well, you gotta take the pump apart to pack it! "..O-ring cracked" ? ....sounds deeper than an O-ring. You got clearance Clarance? I dont think you cracked anything as the tube is pretty soft.

I remember on an LA we just screwed the pick up in so it was snug and still sticking up a bit and laid the pan on it with no gaskets. push the pan to the rails and that would set the distance minus the gasket. The LA had that shoe type with the built in standoff on the bottom.