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Technical 1947 Buick 3-Speed

Discussion in 'The Hokey Ass Message Board' started by PeteB1933, Sep 7, 2016.

  1. PeteB1933
    Joined: Jul 24, 2011
    Posts: 15

    PeteB1933
    Member

    I just picked up a 3-speed trans from a 1948 Buick Model 50 (Super). I'm assuming this box will fit into my 1947 Model 50 (also a Super). Can anyone confirm that it will fit? It looks almost identical and is the same length (as close as I can measure with a tape). Any info will help. Thanks
     
  2. Gman0046
    Joined: Jul 24, 2005
    Posts: 6,256

    Gman0046
    Member

    Those old "one arm bandits" are the same. Back in the day we used the gears out of late 40's big Buick transmissions in the 37 transmissions we blew up.

    Gary
     
    Last edited: Sep 8, 2016
  3. PeteB1933
    Joined: Jul 24, 2011
    Posts: 15

    PeteB1933
    Member

    Thanks for the info. I brought it to get checked by a guy who knows transmissions better than myself....My research so far says they're the same for the "Super" for a number of years, but just thought I'd post the question.
    Thanks again.
     
  4. Msgr. Doug Cook
    Joined: Aug 24, 2016
    Posts: 8

    Msgr. Doug Cook
    Member

    Buick didn't change much in those years, so I would guess you are OK.

    You should check out the website for the Buick Club of America.

    At the worst, you might need to swap the tail housing and output shaft to get the length right.
     
  5. Your GM Parts Manual will be the definitive source that will tell you if the '48 tranny will fit in the '47 .... or not.
     
  6. PeteB1933
    Joined: Jul 24, 2011
    Posts: 15

    PeteB1933
    Member

    Thanks for the 1947 Buick tranny info. I haven't posted in a while, but FYI....I've found out that the 1948 Super transmission is different than the older Supers. The '48 has 4 large mounting bolt holes in the front. The '39 thru '47 have 6 bolt holes (the extra two accept the transmission mount). The earlier Super transmissions appear also to have a shorter tail-housing. My '47 and '48 Supers have a long tail-housing (6" tail-housing length). I plan to use an early Super tranny and swap the longer tail-housing and shaft from the '47 / '48 onto the early trans so it fits my '47. All this is for the "Super" only. (Roadmasters are different). If I have any of this info wrong, please chime-in and correct it, but so far this is my $0.02.
     

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