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Buick Dynaflow ID/interchange

Discussion in 'The Hokey Ass Message Board' started by 55olds88, Jul 16, 2011.

  1. 55olds88
    Joined: Jul 23, 2001
    Posts: 2,383

    55olds88
    Member

    Hi,
    I have a Dynaflow down here in NZ, not too sure of its year or what else it will fit.
    Cast into the top is... DYNAFLOW 1342992-9 then under that is 6 8
    Can anyone help me ID this sucker ? I understand it came off a 55 vintage 322 but not too sure.

    thx,
     
  2. buford26
    Joined: Jul 25, 2005
    Posts: 154

    buford26
    Member

    My 1940-1963 Master Chassis Parts Book doesn't have the number 1342992, but it says 1342993 was replaced by 1389449. But under transmission cases it only list 1389450 as 1954-1955 auto trans case (all). I think '54 was the last year for the cast iron converter housing and '55 it was aluminum. For Dynaflow transmissions, a production identification number is stamped into the lower edge of the reaction shaft flange on the bottom surface of the transmission case directly to rear of the high (left, drivers side in U.S.) accumulator. The left high accumulator is a round shape with a hex-head bolt with very wide flange, off the left front corner of the sump pan. The identification number is a letter followed by some numbers. If you can find those numbers maybe someone can ID it better.
     
  3. 55olds88
    Joined: Jul 23, 2001
    Posts: 2,383

    55olds88
    Member

    thanks Sean, will try to get into the back of the shed tonight and see if I can find that #
     
  4. 55olds88
    Joined: Jul 23, 2001
    Posts: 2,383

    55olds88
    Member

    O.K. folks this is what it looks to say when Sean indicates I 152, any help to anyone ?

    thx,
     

  5. buford26
    Joined: Jul 25, 2005
    Posts: 154

    buford26
    Member

    I think the I production code was used on 1954-1955 50 and 70 series (Super and Roadmaster) which had the 322 nailhead. Is the bell housing cast iron or aluminum?
     
  6. 55olds88
    Joined: Jul 23, 2001
    Posts: 2,383

    55olds88
    Member

    Hi Sean, looks like cast iron to me.
     

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