The center section looks big and round from the rear? Its probably the same rear used in 3/4- and 1-ton GM trucks since the AD trucks.

Can you post a picture?

The later year rears have better gears than the early ones, but with a 4-speed it is not likely the most desirable ratio usually only found on automatic equipped trucks.


1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble...