Help wanted identifying convertor

Engine, Trans & Driveline

  1. dickdale

    dickdale Well-Known Member

    Messages:
    375
    Likes Received:
    100
    Joined:
    Oct 29, 2010
    Location:
    Europe
    Local Time:
    9:51 PM
    I have 2 transmissions. One is a 727 bigblock and the other is a A518 46RH with OD. The convertor that came with it has Lock-up.
    I’ve dissembled my Plymouth years ago and I’m going to replace the 440 for a 2014 Hemi SRT8.

    I cannot figure it out which convertor belongs to which transmission.

    I know the input shafts are different. One convertor has a counter weight on the side.

    Any help is appreciated.
    727
    92B6EA72-CEAA-41B7-93F2-533542D24B2F.jpeg

    A518
    45051FAF-7E46-4B45-AD9C-9F58700C0BF9.jpeg
     
  2. 493 Mike

    493 Mike FBBO Gold Member FBBO Gold Member

    Messages:
    3,218
    Likes Received:
    3536
    Joined:
    Dec 25, 2011
    Location:
    White Cloud, MI
    Local Time:
    10:51 PM
    The lock up converter belongs to the trans with the shortened splined area on the input shaft.
    Mike
     
  3. dickdale

    dickdale Well-Known Member

    Messages:
    375
    Likes Received:
    100
    Joined:
    Oct 29, 2010
    Location:
    Europe
    Local Time:
    9:51 PM
    I’ve figured that out. However looking on the outside, which convertor is the one that belongs to the a518?

    A110196D-D7DF-495A-AB11-427B8C6C8EDA.jpeg
     
  4. 493 Mike

    493 Mike FBBO Gold Member FBBO Gold Member

    Messages:
    3,218
    Likes Received:
    3536
    Joined:
    Dec 25, 2011
    Location:
    White Cloud, MI
    Local Time:
    10:51 PM
    You did not tell us there were two converters. Drain them and flip them hub side up. You should be able to see the shoulder that accepts the machined input shaft. Or feel inside with a screw driver for the splines/machined smooth inside as far as you can reach.
    Mike
     
    • Thanks! Thanks! x 1
    • dickdale

      dickdale Well-Known Member

      Messages:
      375
      Likes Received:
      100
      Joined:
      Oct 29, 2010
      Location:
      Europe
      Local Time:
      9:51 PM
      I found out that the 727 has a 24 spline and the 518 has a 23 spline.
       
    1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
      By continuing to use this site, you are consenting to our use of cookies.