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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | The common disk conversion kits are all designed for a 1/2-ton truck. The spindles are different on the 3/4-ton and the 1/2-ton kit isn't going to work the way it comes out of the box.
Unless you are commited to keeping the truck a 3/4-ton you might consider swapping a 1/2-ton axle in the front so you can benefit from the available conversion kits instead of designing your own conversion.
I'm curious why you would choose a nailhead for this swap. Starting in '55 GMC installed Oldsmobile and Pontiac V-8 in pickups. I've always thought a fun swap would be a 455 Pontiac with the GMC pickup valve covers and GMC labels.
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... | | |
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