Good point- - - -I recall a MOPAR hemi engine that would lock up when the main bearing with the thrust face was torqued. We even line-bored that engine without correcting the problem. We finally discovered the main cap was deflected backwards in the middle by almost 20 thousandths, and then the engine owner remembered it had come out of a car that had had a massive front-end wreck. A new cap and a second line bore fixed it.

A rod bent sideways by a hydraulic lock and/or trying to pull-start a rust-seized engine could be causing your problem. I've got a set of 54-62 rods- - - -PM me.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!