Maybe have to take a few pictures of the trans, and bolt pattern on side cover and research the numbers.

Maybe you have found the GM heritage site from the SB links page.
http://chevy.oldcarmanualproject.com/chevyresto/index.htm
If I were betting, I would say Saginaw.


~ HB
1966 Chevrolet K-10 | Ghost: formerly Flappy Fenders | In the Stovebolt Gallery
1962 Chevrolet C10
1962 Suburban