Mike - With only a little time this morning, here's one tidbit of info I extracted from a 1962 Chevrolet TSB (Technical Service Bulletin) that identifies the '62 60 Series 327 engine serial number Suffix ID letters (found at the tail end of the stamped engine serial number) on the left front engine block pad.
More info when I can.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)