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Nail head trans question ?

Discussion in 'The Hokey Ass Message Board' started by bangngears, Oct 26, 2010.

  1. bangngears
    Joined: Aug 30, 2007
    Posts: 1,340

    bangngears
    Member
    from ofallon mo

    I was looking at a bunch of nailhead stuff yesterday to make a package deal. In the pile were 2 transmissions, now the guy i was talking to says this is all 1964 stuff.The transmissions looked like 400 turbos but only had 5 detents when we shifted them.What are they and did they shift like a power glide? They are not dynaflows because dynaflows had a rectangular pan,these look like the pan on a 400. Would they be ok for just a driver with a feel for when it shifts? Please dont get started on a 400 rant, just want to know about the 2 speed.Thank you in advance.
     
  2. zman
    Joined: Apr 2, 2001
    Posts: 16,790

    zman
    Member
    from Garner, NC

    seriously didn't we cover this in the other thread you started.
    http://www.jalopyjournal.com/forum/showthread.php?t=523570

    If they look like 400's they are ST400's, they are TH400's but 64 was a one year only valve body. The 5 detents is because you can't choose 2nd on them. Hence the one year only valave body, they're fine transmissions.
     
  3. bangngears
    Joined: Aug 30, 2007
    Posts: 1,340

    bangngears
    Member
    from ofallon mo

    Zman, thanks for the heads up,had me confused about what they were.I guess i will have the guy i am dealing with throw them in the pile.
     
  4. zman
    Joined: Apr 2, 2001
    Posts: 16,790

    zman
    Member
    from Garner, NC

    I ran one of the '64 ST400's in my '57 Buick behind a 425 for a few years with no real issues, I put it in without a rebuild and ran it hard, it gave up and I put in a '64 SP400, but it will get rebuilt and go in another car.
     
  5. Motion bird
    Joined: Jul 29, 2008
    Posts: 50

    Motion bird
    Member

    Would that be a switch pitch?
     
  6. zman
    Joined: Apr 2, 2001
    Posts: 16,790

    zman
    Member
    from Garner, NC

    not for a '64, switch pitch started for the '65 year.
     
  7. 39cent
    Joined: Apr 4, 2006
    Posts: 1,569

    39cent
    Member
    from socal

    zman, I recently got a 401 with a t400 out of a "64" buick wildcat , it has a 2 prong elect connector on the side of the trans. I heard that switch pitch t 400,s first came out in "65", could this one be original, or is it a replacement??
     
  8. zman
    Joined: Apr 2, 2001
    Posts: 16,790

    zman
    Member
    from Garner, NC

    as is the case with a lot of the manufacturers back in the day, it could be a late model year car that got the '65 trans, or someone swapped one in as a replacement. Either way the two prong connector does point to a switch pitch. The only way to be sure is with the tag on the trans and the build sheet.
     

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