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Technical 1959 Pontiac 389

Discussion in 'The Hokey Ass Message Board' started by draggin'GTO, Oct 28, 2015.

  1. Old TFFdriver
    Joined: Jan 14, 2016
    Posts: 191

    Old TFFdriver
    Member
    from California

    Just joined. Love 389's got a few and bunch of parts. Check out my posts if you like. Raced Dragboats for years too. Got love that picture. Anyway I can help you guys let me know. I did not read the whole thread.
     
  2. Old TFFdriver
    Joined: Jan 14, 2016
    Posts: 191

    Old TFFdriver
    Member
    from California

    Build some oil pressure and fire it. Old Pontiacs are like horny old lady's ...they love to fired up again! You would be amazed on how long I have seen one sit and fire right up ...,
     
    loudbang and kidcampbell71 like this.
  3. bchctybob
    Joined: Sep 18, 2011
    Posts: 2,517

    bchctybob
    ALLIANCE MEMBER

    Horny old lady or a Pontiac?? LOL
     
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  4. I just bought a 57 tri power Chiefton, good clean car from Ca. originally. I purchased it from Nevada. The engine has been apart for many years, the tri-power was in the trunk! It will get a complete rebuild eventually. I will be following along with this thread!
    Bill
     
  5. Old TFFdriver
    Joined: Jan 14, 2016
    Posts: 191

    Old TFFdriver
    Member
    from California

    Both...!!!
     
  6. draggin'GTO
    Joined: Jul 7, 2003
    Posts: 1,753

    draggin'GTO
    Member

    I haven't had much time lately to mess with the 389, but I did pick up an interesting piece of the puzzle today.

    A 1959 Tri-Power cast iron thermostat housing. :)

    What makes this part unusual is the engine lifting loop built into it. On the '59 2 barrel and 4-barrel intakes the loop is integrated into the intake manifold casting, but for the Tri-Power they were only able to find room for the loop on the thermostat housing.

    [​IMG]

    [​IMG]

    [​IMG]

    Here it is shown next to an aluminum repro of a '65 Tri-Power housing for comparison. The '59 unit is pretty big and heavy, I put it on a shipping scale and it weighs 2.85 pounds compared to the '65 aluminum repro at a scant .55 pounds.

    [​IMG]

    Here you can see how the lifting loop configuration of the thermostat housing was copied in .150" to .175" thick stamped steel for later engines, attaching to one of the studs that mount the timing cover.

    [​IMG]
     
    Last edited: Feb 21, 2016
    loudbang likes this.
  7. draggin'GTO
    Joined: Jul 7, 2003
    Posts: 1,753

    draggin'GTO
    Member

    Here are my freshly restored 1959 Tri-Power carbs along with the correct linkage and fuel lines, sitting on the builder's workbench ready for shipment. The carbs, linkage and fuel lines are shown here mocked up on a 1960 intake.

    Pretty unusual fuel line routing compared to what I'm used to seeing on the more common '64 -'66 setups.

    New toys. :)

    [​IMG]

    [​IMG]
     
  8. Who did the carbs?
     
  9. draggin'GTO
    Joined: Jul 7, 2003
    Posts: 1,753

    draggin'GTO
    Member

    A gentleman who I know from a Pontiac forum that I moderate, Dick Boneske. He reproduces some Tri-Power components and is also an expert at restoring Tri-Power carbs and parts.

    I'm pretty sure he fabricated the fuel lines on both of these setups shown here, he does the hot air choke tubes as well. None of the carb parts are painted, they're all plated or dyed using the proper processes.

    Here's a '64 setup he did for me about 5 years ago. They ran perfect right out of the box after sitting for most of that time waiting for me to slide an engine under them, a fresh '64 421 HO.

    [​IMG]

    [​IMG]

    [​IMG]
     
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  10. Well did you ever install the mill in a vehicle?
     
  11. ETriggs
    Joined: Aug 28, 2006
    Posts: 3

    ETriggs
    Member
    from Alabama

    Subscribed to this... I have a 1960 Bonnville that I need to rebuild the motor on. Good info!
     
    Old wolf likes this.
  12. draggin'GTO
    Joined: Jul 7, 2003
    Posts: 1,753

    draggin'GTO
    Member

    Not yet, I have a major home improvement project in the works so I have no time and no good place to do any engine work at the moment.

    However there may be a chance that it will end up in a vintage Pikes Peak car driven by a member of a famous racing family. A friend came by inquiring about stick shift parts for a Pontiac and the conversation led to possibly letting go of my '59 389 for the Pikes Peak car. The '59 389 would have been the correct engine used in this car, however this race car is not a '59 Pontiac.

    Even if it doesn't happen, I'm hoping to get pics of the car and then ask him if I can do a feature here on the HAMB.
     
    Old wolf and loudbang like this.
  13. map
    Joined: Jun 18, 2007
    Posts: 132

    map
    Member

    Why did the heads have valve guide vents?
     

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