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Technical gm 4 speed tail housing out of postion

Discussion in 'The Hokey Ass Message Board' started by c/h, Nov 14, 2018.

  1. c/h
    Joined: Jul 29, 2008
    Posts: 486

    c/h
    Member
    from iowa

    yes while trying to un stick my direct drive in a old dragster I bought I have apparently made a mistake .
    I removed the bolts to the rear housing and now I cant get the housing to seat correctly against the 4 speed case as per photo.im guessing I have something out of alignment. After some penetration fluid the direct drive slid right out ,rusty.
    any input or correcting my mistake
    thank you
     

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    chryslerfan55 likes this.
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 55,931

    squirrel
    Member

    You really do want to take that transmission apart, and fix it....forcing it back together isn't gonna be good.
     
    Hnstray and Johnny Gee like this.
  3. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 12,600

    Johnny Gee
    Member
    from Downey, Ca

    Main shaft is now out of input shaft and needle bearings fell out?
     
  4. gimpyshotrods
    Joined: May 20, 2009
    Posts: 23,263

    gimpyshotrods
    ALLIANCE MEMBER

    Has that been stored in a puddle?
     
    VANDENPLAS likes this.

  5. Mr48chev
    Joined: Dec 28, 2007
    Posts: 33,861

    Mr48chev
    ALLIANCE MEMBER

    I'm pretty sure that Jim is right there. That trans is going to have to come apart far enough that you can put the needle bearings back in right and probably needs to be gone through fully anyhow from the looks of the outside.
     
  6. c/h
    Joined: Jul 29, 2008
    Posts: 486

    c/h
    Member
    from iowa

    been sitting out side for 40 years. Its all dissembled and being blasted be like new come spring.
    ok il get it to a shop and redone. Thanks for all the replies and input
     

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  7. egads
    Joined: Aug 23, 2011
    Posts: 1,419

    egads
    Member

    That looks like it's gonna be fun when it's done :)!!
     
  8. seb fontana
    Joined: Sep 1, 2005
    Posts: 8,442

    seb fontana
    Member
    from ct

    Thought that but don't see a nub on end of shaft..
     
  9. That spline goes into the rear of the trans and is binding (arrow)
    The welded collar is also rear end-1.jpg binding inside the extension.
    Where is this associated with the input shaft?
     
  10. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 12,600

    Johnny Gee
    Member
    from Downey, Ca

    I'm having trouble id'ing the trans. Trans is upside down in this shot right?
    [​IMG]
     
    Last edited: Nov 15, 2018
  11. krgdowdall
    Joined: Apr 3, 2015
    Posts: 131

    krgdowdall
    Member
    from Alberta

    Is that really a 4 speed? a lot of smaller rails used a 3 speed transmission, used 2nd and 3rd as a 2 speed box.
    Does that stub shaft not come off the pinion shaft? It may have a set screw or roll pin
     
  12. squirrel
    Joined: Sep 23, 2004
    Posts: 55,931

    squirrel
    Member

    Side cover looks like a Saginaw 4 speed

    Sent from my Trimline
     
    Johnny Gee likes this.
  13. Mr48chev
    Joined: Dec 28, 2007
    Posts: 33,861

    Mr48chev
    ALLIANCE MEMBER

    digger driveshaft.jpg Being as that is the rear banjo to the left and a welded together driveshaft to go inside the torque tube. It probably can't go anywhere if it does break and may be safer than a U joint there in the long run. That whole setup looks like it sat under water for extended periods of time though.
    On the other hand that shot of the bare frame sitting on stands shows some real potential.
     
    harpo1313 likes this.
  14. c/h
    Joined: Jul 29, 2008
    Posts: 486

    c/h
    Member
    from iowa

    if the engine would have been in it would have been turn key car.it was complete down to original halibrands fuel tank chute lever seat it was all there.sure it was hurt from weather but it was all there.dont have to rengineer anything to speak of plus nice to talk to the son who was racing it back in he day with there in Oklahoma .
    photo of it in its day. known as "the good bad and the ugly"fun project. Even came with the trailer they pulled back in the day
     

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    Last edited: Nov 15, 2018
    egads likes this.
  15. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 12,600

    Johnny Gee
    Member
    from Downey, Ca

    The photo by op shows the rear bearing clearly has ring clip grove that holds main shaft to tail housing in stock form. It's just how distorted the photo looks (likely cell phone) that made the bolt pattern and shape look incorrect to me to be a saginaw.

    How stock tail housing and main shaft when held by ring clip looks. They become as one.
    [​IMG]
     
    Last edited: Nov 15, 2018
  16. squirrel
    Joined: Sep 23, 2004
    Posts: 55,931

    squirrel
    Member

    I don't know of any other transmissions with a side cover with 3 shift levers on it.
     
  17. Johnny Gee
    Joined: Dec 3, 2009
    Posts: 12,600

    Johnny Gee
    Member
    from Downey, Ca

    Agree Jim, What I spoke about was prior to c/h's 3 posting of photo's. The 3rd posting does clearly show side cover but to late to help with my portion of the conversation in sequence to this thread.
     
  18. c/h
    Joined: Jul 29, 2008
    Posts: 486

    c/h
    Member
    from iowa

    yes its a Saginaw
     

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