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Technical 1937 Buick 3 speed to 1952 Cadillac 331

Discussion in 'Traditional Hot Rods' started by Walter Kristick, Apr 22, 2023.

  1. I have a 1937 Big Buick 3 speed with OLDs gears and open tailshaft and a 1952 Cadillac 331 V8 engine. Could these be used together with some adapter? The Buick transmission in now connected to a 1954 Buick bellhousing. The Engine is going in my 1934 Ford 5-Window Coupe. Any suggestions would be appreciated.
     
    don colaps likes this.
  2. HEATHEN
    Joined: Nov 22, 2005
    Posts: 9,032

    HEATHEN
    Member
    from SIDNEY, NY

    If it is indeed the heavier transmission with the six bolt top cover, it should bolt to a 1951-63 Oldsmobile standard shift bellhousing, which would bolt to your '52 Cadillac engine.
     
    don colaps likes this.
  3. vtwhead
    Joined: Oct 20, 2008
    Posts: 5,304

    vtwhead
    Member

    Check the input shaft length as Buick had a longer/shorter input. Best to know now what it is before you ***emble everything for the project. I run the same set up only behind my Olds 324. If you need the Olds measurement I have one in the shop I could check. What year Olds gear is in the ******?
     
  4. Yes, it is a six bolt top. Thanks for the information.
     

    Attached Files:

    don colaps and oliver westlund like this.
  5. Shaft is 6" from bell housing case. I was told the transmission had Olds gears but I don't know how to tell. Tail shaft is definitely Olds. Thanks.
     

    Attached Files:

  6. vtwhead
    Joined: Oct 20, 2008
    Posts: 5,304

    vtwhead
    Member

    That input shaft looks to be correct but I am not able to find that tail stock number. I suspect it is a 57-61 gear. The output shaft will be larger than the 51-56 piece. Without measuring mine I would say it is in the 1.250 range. Here is a great thread on these trannies that will take you thru the conversion process.
    37-38 Buick trans with early olds gears etc | The H.A.M.B. (jalopyjournal.com)
     
    rod1 and Atwater Mike like this.

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