Interesting thread here.

So I have an SM420 (88373340, but the first '8' appears upside down) that I think is from a 1965 GM 1-ton plumber's truck.

I my open drive-line 1939 Chevy JD truck has a 1957 235 engine with what I think was the original 1939 non-synchronized four-speed transmission.

What is the best path forward to get this transmission behind my engine? Just eye-balling it, it doesn't appear that the bolt pattern of the bell housing matches the SM420. Is there a specific year or P/N of the bell housing that I'm searching for? I'll add this to my wish list when I go to the Pomona swap meet.

--BeeMAC1975

Last edited by Peggy M; 12/13/2023 3:16 AM. Reason: added more info to the title with the move.
Regards, Bob