One more FYI- - - -If your machinist is comfortable doing it, the main bearing journals on the crankshaft can be roughed out on a lathe to within a few thousandths over the desired diameter, and then ground and polished to finish size. That eliminates wear and tear on those expensive crankshaft grinding wheels.
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!