1971 ( 340 ) Block & Crank obtained !

This one was weird atleast to me it had dated bearings on mains and rods but has a 20 over bore ?
I have read before where manufacturers sent new blocks out that weren't standard bore I guess Chrysler did also.

Yup they sure did. Also, someone could have reused the bearings. The world wasn't as replace happy a long time ago as it is now.