Slant Six Oil light coming on — need a new pump?

Funny (to me) story. I bought a slant form a Mopar bud once to drop in a 63 Dart roller a few or so years ago. Cheap! Mostly wore out! But cheap!! It came out of an A body that the owner used to deliver RFD mail for years. Stop and go driving! To get it to run I had to pour oil down its "throat" to get some compression and get things "lubed". Well after (and a carb rebuild) that it actually ran pretty good and did not really smoke (too bad).

I flushed the block and all with a "muratic acid solution" and then neutralize all that. Disclaimer: Don't try this at home with YOUR car.

Before I dropped it in, I pulled the pan and it had probably an inch of sludge that looked like Mississippi mud. NO doubt it never had oil changes and when it did, must have been a cheap(est) parafin based oil. That got "shoveled" out! Ran some Sea Foam thru it a time or three. Oil pressure was "somewhat" low by the gauge but never seems to hurt it any. Slants are amazing!