Trans swap, ST300 to TH400, in 67 skylark

Discussion in 'The "Juice Box"' started by Houndogforever, Mar 4, 2022.

  1. TrunkMonkey

    TrunkMonkey Totally bananas


    Frame pads. (Specifically, TA Performance manufactured)

    upload_2022-3-27_23-2-37.png
     
  2. Houndogforever

    Houndogforever Silver Level contributor

    TA frame mounting plates. They have 2 sets of holes. One stock, and one that moves the engine forward. In addition to using those frame mounting plates, my cross member has additional holes drilled into it by someone in years past. That also would move the engine location forward or back.
    I used the factory holes in the cross member, and I which ever set of holes on the TA plates that would shove the engine forward.

    I've got a short nose water pump coming, which is what it should have by year, and pulleys too. The short nose pump gives me 5/8" clearance which should put the fan about 1/2" from the radiator.

    It's all good....I hope.
     
  3. sean Buick 76

    sean Buick 76 Buick Nut

    That’s a backwards way of setup the engine placement. Step one bolt the engine in where it’s supposed to be. Step two move the cross member till it puts the trans where it needs to be. Step 3 Modify the driveshaft length if needed. You say you are “hoping” the driveshaft will fit? It’s asking for trouble doing things backwards.
     
    TrunkMonkey likes this.
  4. 12lives

    12lives Control the controllable, let the rest go

    Typical for a 455 going into a 67. I would argue that there is no "supposed to be" unless you consider the GS cars with the 400 running stock manifolds, and they used one year only mounts and pads. TA made their frame plates/pads to allow you to move the block rearwards to provide more clearance for headers, if you want to run those, and to allow use of the current available engine mounts, or a forward position to give clearance to reach the trans bolts. So its different from the stock GS400. Its a hot rod, meaning a lot of custom work and innovation!
     
    Houndogforever likes this.
  5. Quick Buick

    Quick Buick Arlington Wa

    My 67 skylark with a 1972 455 block with NON 67 manifolds has no clearance issue with the rad... There is no custom work or innovation putting the motor in my car.... Although the SWAC will not fit under the hood,,, Too tall intake...
     
  6. 12lives

    12lives Control the controllable, let the rest go

    That's great Bob! I hope mine is straightforward... What mounts/pads did you use?
     
    Last edited: Mar 28, 2022
  7. Houndogforever

    Houndogforever Silver Level contributor

    I'm not concerned about the engine being where it is "supposed to be". The Engine is mounted, the trans is mounted, the wiring is good and the linkage is good.

    It shouldn't matter where the engine is, so long as I have clearance to the radiator. Shortening the WP 5/8" by going to the PROPER SHORT NOSE pump isn't really changing anything that matters, except clearance.
     
    12lives likes this.
  8. Houndogforever

    Houndogforever Silver Level contributor

    Yeah, I'm hoping. It would be great to temporarily use the old shaft for local moving.
    Once I get the car back up in the air and can measure, I will find out. I'm not basing engine location on this old drive shaft.
     
  9. Quick Buick

    Quick Buick Arlington Wa

    A chunk of lumber with a couple of u-jounts straped to it work.... Just for local moving ( off road only use only )not recommended for street use of any kind...
     
    Houndogforever likes this.
  10. Houndogforever

    Houndogforever Silver Level contributor

    Oh god can you imagine. Some 4x4 with plastic strapping. LOL
     
    Super Bald Menace likes this.
  11. boe

    boe Platinum Level Contributor

    PM me if you'd like me to measure water pump flange to radiator dimension on mine.
     
  12. Houndogforever

    Houndogforever Silver Level contributor

    It's all good. I have a pump coming and pulleys too. Once the short nose pump arrives, I will open it up. Probably next week as I have a 4 day weekend to go celebrate what would have been my mom's 100th birthday if she made it 16 more months.
    7 of 8 siblings will be there in one big house. Probably one of the last big gatherings I reckon.
     

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