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Technical Dodge top-shift three-speed transmission interchange

Discussion in 'Traditional Hot Rods' started by Bigcheese327, May 15, 2015.

  1. Bigcheese327
    Joined: Sep 16, 2001
    Posts: 6,694

    Bigcheese327
    Member

    I’m in the planning stages of a ‘40s-style hop up based on a Dodge Brothers roadster and using 90%+ pre-'49 MoPar content. After missing out on a complete engine / trans setup from a ‘38 Dodge passenger car, I’ve started thinking about other sources for a floor-shift 3-speed for this project.

    [​IMG]
    1938 Dodge engine and trans

    I was already planning to use the steering box, column, and wheel from a Job Rated truck, and it occurred to me that these vehicles used floor-shift boxes as well.

    [​IMG]
    1942 Dodge truck floor shifter

    Were the ‘39-‘47 truck three-speeds related to the ‘37-‘38 passenger-car boxes? How do the ratios compare? Can you swap parts around?

    Any help is appreciated!
     

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