A 1-ton truck with a 350 and a T-5....

While you're suggesting the stouter T-5 I still conclude you are not going to use this as a 1-ton truck based on your tranny choice.

What are you going to do with the truck? Understanding that makes it much easier to make relevant suggestions.

I don't think I would box this frame, that steal is nearly a quarter inch thick (7/32 on an AD) and already pretty stout. Even if I'm wrong about your hauling intentions I still don't think boxing the frame is needed.


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...