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1956 Pontiac Tranny Cooler

Discussion in 'The Hokey Ass Message Board' started by 31bowtie, May 6, 2013.

  1. 31bowtie
    Joined: Aug 8, 2009
    Posts: 62

    31bowtie
    Member
    from maine

    Hi guys, could use a little help with a heating issue. I am removing the heater in order to convert the car to disc brakes. And the issue I am having is determining how the tranny cooler receives and returns antifreeze to the radiator. Any help would be greatly appreciated!!!
     
  2. mustang6147
    Joined: Feb 26, 2010
    Posts: 1,847

    mustang6147
    Member
    from Kent, Ohio

    Can you post a pic?
     
  3. 31bowtie
    Joined: Aug 8, 2009
    Posts: 62

    31bowtie
    Member
    from maine

    Sorry, it's a Star Chief with a 316 and a Hydramatic transmission.
     
  4. mustang6147
    Joined: Feb 26, 2010
    Posts: 1,847

    mustang6147
    Member
    from Kent, Ohio

    Does the tranny cooler really have anti freeze in it?
     
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  5. 55chieftain
    Joined: May 29, 2007
    Posts: 2,180

    55chieftain
    Member

    The trans doesn't have any lines going to and from the radiator for any cooling.

    The underseat heater has a feed and return line and one end goes to the radiator but nothing to do with the transmission.

    There is an online 56 shop manual over on Pontiacsafari.com thats show the routing I believe.


     
  6. KoolKat-57
    Joined: Feb 22, 2010
    Posts: 2,930

    KoolKat-57
    Member
    from Dublin, OH

    Are you talking about the firewall mounted defroster box?
    KK
     
  7. 49toad
    Joined: Jun 12, 2005
    Posts: 321

    49toad
    Member

    Hydromatics were not externely cooled. There is not cooling lines.
     
  8. ponchopowered
    Joined: May 27, 2010
    Posts: 438

    ponchopowered
    Member

    i think he is talking about the under the seat heater. in that case just remove it and plug the line on the bottom of the radiator
     
  9. buds56
    Joined: Dec 9, 2004
    Posts: 176

    buds56
    Member

    If your 56 has the hydramatic with the park feature (stratoflite) the cooler mounts on the rear of the trans.
    One hose in one out
    The dual-range (no park feature) didn't have an oil cooler.
    My 56 had a one coolant line on the right rear of the cyl head and the other on the left lower of the radiator.
     
  10. 31bowtie
    Joined: Aug 8, 2009
    Posts: 62

    31bowtie
    Member
    from maine

    Thanks everyone! buds56, you had it right! I did some research and found that the 56 did have a tranny cooler. And as you said it is fed from the right rear of the cylinder head, and the return line y's in with the return line from the under-seat heater. So now I am going to re-route the return line before the y and take it back to the radiator! Couldn't see anything until I jacked the car up. I am moving the defroster to make room for a brake booster/master cylinder as I convert the front brakes to disc.
     
  11. Ice man
    Joined: Mar 12, 2008
    Posts: 968

    Ice man
    Member

    What are you gona do with the defroster. You gona need it up there. Also the defroster should have the first water before the heater, or it won't do a good job. Ask me how I know. Iceman
     
  12. 31bowtie
    Joined: Aug 8, 2009
    Posts: 62

    31bowtie
    Member
    from maine

    Hi Ice Man, going to move the heating to the other side of the car. Will try and find another smaller unit to do defrosting/heat. Lots of room on the other side of the firewall. Or maybe use some of the left over space close to where it is now.
     

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