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Labor Day Putting down your wrenches or time for
MORE wrenching? 
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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: Nov 2011 Posts: 1,609 'Bolter | | 'Bolter Joined: Nov 2011 Posts: 1,609 | I don't think a non-synchronized 4 speed transmission will bolt up to your 3 speed bell housing. If my memory serves me correctly, both the center bearing retainer diameter and the mounting bolt pattern are different.
All 1937-early 1947 1 1/2 ton trucks used an open driveline.
Given your situation, I think the 3.55 ring and pinion swap would be the most expedient. | | |
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