Engine and transmission stamps

[mmartoi]

Can anyone shed some light what numbers mean on engine and transmission.

 

[eldubb440]

top pic 2 12 71 ....... date block was cast ....... N, next to the dial.. night shift?

bottom pic G440 3 3 .......1971 (G) 440 assembled march 3

numbers cast into the block........ part numbers? not sure

 

[Orig69]

Bottom picture is G 440

 

[eldubb440]

Bottom picture is G 440

geeeze......... my bad, too much turkey?........I'll edit

I saw the 3 3 and had 383 on the brain