Yes, now that you mention it, it does smell like a rear end (pun intended). I just thought from the condition of the bearings and other internals that it was creating a hot condition where the oil was breaking down and loosing its ability to lubricate.
Block D0AE-L OH28 Aug 28, 1970
Heads D1AE 0J19/0J24
Hand stamp on block rail beside oil pump 91170
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