1972 dodge dart with oil light flicking

One other thing to check....years ago I had a slant that was fairly clean inside, but the oil pump pickup screen had some solid chunks of sludge inside that was blocking good flow. Cleaned the screen out really good in the parts cleaner (and some Brakleen if I remember) and the light went out never to come on again. I say this just because its something else to check after you put a manual gauge on it and possibly get a low reading. If that's the case, check this before condemning the bearings. That motor was so well made they really can take a ton of abuse. I knew a cat that had his water pump go bad and still drove 10 miles to get home without killing the head gasket. Try that on any modern car and the engine is dead and stinkin'....