I have a 1950 3100 with a 1966 Saginaw 3 speed behind a 1953 235. The 12 bolt rear end is out of a 1973 truck with six lug. I don't know what the rear end gear ratio is, but I can tell you that I can keep up with traffic on the interstate with some gas pedal leftover.

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission