Quote:
Originally Posted by track73
My father's '78 Catalina with a 301 loaded up with gas because of a stuck needle valve. When he tried to clear it out by flooring the gas pedal the engine broke. I believe a connecting rod or 2 let go.
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Probably hydro-locked it. With contaminated oil, the bearings die a slow death with no drama.
Al in all, the OP's issues sound like sloppy machining and too tight clearances.