the first time I changed oil in a new 1969 coronet 440-4 speed ,rt , something started blocking the drain hole , reached in w/ a wire w/ a hook bent on it , and pulled a gob of steel wool out --sabotage from the factory , no doubt !
That's scary, have some assembly line "sabotage" stories from years in the shops, & working with guys that worked in Detroit/Dearborn in the bad old days.......
Back to the OP, if somebody re-sealed the the bottom end and put RTV in excess on the retainer bolts, they can hydro-lock & blow out the weakest spot. Think this happened to another member here a little while back....
