no oil on rocker's drivers side only? 360 magnum

These are still good right...lol well i guess the crank itself looks ok, but looks like i will be taking it apart and at least putting bearings in it if not just rebuilding the whole thing. I have another question, I was told that this 360 was internally balanced. How can I tell if that is true?... after this I don't believe a word the guy i got the engine from has told me about the engine. would the wearing of the main journal bearing indicate that?.