Pully?

[SS454]

I found a BB Deep grove pully pat#3921923 BM. I know that it is for a L78 396. What I want to know is there are some other # on it are they a date code?
G8
s2

That is what is stamped on it. Thanks

[bertfam]

1968 Camaro L78 or L89 Base model Crank Pulley. The "G8" is probably July, 1968? No idea what the "S2" is.

HERE'S MORE INFO (All the way toward the bottom)

Ed

[Mr70]

S2 could be 2nd shift,or if there is a circle around the S,it could mean A.O.Smith fabricators.

[Kim_Howie]

68 Nova's L-78 Gibb cars used this pulley.