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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!
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| | | | Joined: Dec 2012 Posts: 201 Shop Shark | | Shop Shark Joined: Dec 2012 Posts: 201 | I bought a parts truck with a 2-speed rear end that I want to put in my '46 2-ton. Before anyone jumps in to tell me it won't make the truck go any faster, I know that. I use the truck in the hills of western MA and could use some lower gears when it's got a full load.
The question is will the two-speed differential fit in the one-speed housing? If it will, that would save a lot of work. If not, would the brakes interchange or would I be on the hook for new parts?
Thanks. | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Ed Hotaling, are the two trucks both "Art Deco" style? Do the two trucks have the same GVW? According to my Fel-Pro gasket catalog the single speed and two speed rear axles from 1937 to 1954 do not use the same gasket, so I would surmise that the two speed will not swap into the single speed housing, hope that helps. | | | | | Joined: Dec 2012 Posts: 201 Shop Shark | | Shop Shark Joined: Dec 2012 Posts: 201 | Yes they are both Art Deco 2-tons. I was really hoping I could just swap the differentials.That would make the job and down time a lot quicker. | | | | | Joined: Jan 2013 Posts: 1,384 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 1,384 | The answer is no.
The 2 speed housing doesn't bolt up to a single speed axle.
Brakes would depend on who made the axle. | | |
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