Well I think you've already got a pretty good picture. 450 tells you its a '3-ton' (I think) rated truck and the last 4 tells you the wheelbase.

Pontiac motors were used in V-8 powered Blue Chip trucks, and tandem axles would be a big truck, so GMC 450 series may be right. It may also have been a smller truck and converted to tandem.


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...