Whether or not you need the car backing plates and related parts depends on the year of the truck axle if I remember right. Some years you don't.

With something this old (1939) I'm sure you would need to swap them. When I did this with my '41 1/2-ton in the early 70's I did have to swap the backing plates and related parts.

I'd look for a '51 to '54 to get the Bendix brakes out of this swap too (thanks Bill).


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...