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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: Apr 2001 Posts: 31 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2001 Posts: 31 | I have a 1937 GMC with a 3 speed. I want to swap in a 37 4-speed I have. The 4 speed has a u joint with a speedometer gear. I have already updated the rear to a 41 rear (18 spline) with 3.55 gears. To do this I have to find a u joint that I can switch the torque tube side. I have looked on ebay for a similar 41 1/2 ton u joint without luck. Anybody have experience with this?
Mike J 37 GMC
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