TH350 / 200R4 swap summary

Discussion in 'The "Juice Box"' started by techg8, Apr 11, 2009.

  1. techg8

    techg8 The BS GS

    Cutlk OTE=buicks;2470247]Regarding shift points, is there a stock one that is plug and play for a 72 Skylark? As far as, if it is in good condition or is stock rebuilt for the donor car and you would not like to break it open or pay to have it custom built?[/QUOTE]
    my suggestion would be to choose a core that came from a car that has the same your gearing as your Skylark.

    So if you have stock 2.5 6 gears in your Skylark, maybe an OG transmission from an Oldsmobile Cutlass 307 would suit. If on the other hand you have 3.73 rear gears in your Skylark then I would think that a CZ transmission from a Monte Carlo SS would be suitable. I think in every case shift. Will not be exactly where you would want them today but a close match might be able to be found. it's all about the transmission output shaft speed since thats what the governor works off of
     
  2. techg8

    techg8 The BS GS

    Summit has the TCI kit number 376600

    And they sell just the vacuum switch if that's all u need
     
  3. hobbby

    hobbby Well-Known Member

    Awesome thank you. I sent them a message.
     
  4. Skippy597

    Skippy597 Silver Level contributor

    Could this be made a sticky?
     
  5. sean Buick 76

    sean Buick 76 Buick Nut

    Sticky!
     
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  6. DBS

    DBS Well-Known Member

    All very interesting - Thanks guys. Something I'd been considering on an upcoming build and this took all the mystery out if it and definitely makes me lean more towards doing it.
     
  7. wovenweb

    wovenweb Platinum Level Contributor

    What did everyone use for transmission cooler lines?
     
  8. jaye

    jaye Well-Known Member

    I got line from a local parts store and bent my own lines and ran them into the radiator, later I plan on putting in a separate cooler for the transmission so far its running great in the radiato
    I'm also running my lockup on a toggle switch & relay.
     
    1972 Stage 1 likes this.
  9. techg8

    techg8 The BS GS

    Summit sells stainless braided hose kit w -an adapter fittings. I ran them inside the framerail.

    I believe JW sells a kit as well.
     
  10. techg8

    techg8 The BS GS

    2020 cooler lines update Part Numbers
    SUMMIT RACING

    sum-230615 braided -6an 15ft qty1
    Vpe-16435 inverted seat adapter qty2
    Sum-220690B -6an straight hose end qty4
    Sum-220027 trans line adapter set qty1
     
  11. knucklebusted

    knucklebusted Well-Known Member

    I know this is old but here's my intake that was scrubbed of the old mounting bosses and I used a spacer to get the bracket off the intake while leaving the carb directly on the intake.

    The bracket hits a low profile breather but the factory GS breather is fine.
    [​IMG]
     
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  12. Mart

    Mart Gold level member

    And this setup fits under an L88 drop base with ease.... 20210905_120819.jpg 20210905_120954.jpg
     
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  13. Mart

    Mart Gold level member

    Greg,
    what keeps your bracket from pivoting and loosing your t/v cable adjustment?
     
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  14. knucklebusted

    knucklebusted Well-Known Member

    It mounts to both rear studs.
     
  15. Canadian GS 350

    Canadian GS 350 Well-Known Member

    Has anyone struggled with having the column indicator work with a floor shifted 200 4-R ? Assume adding the extra gear is causing additional rotation of the column and breaking indicator on the bottom of the speedo gauge.
    Thanks
    Brad
     
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  16. knucklebusted

    knucklebusted Well-Known Member

    A buddy has a 200-4R with a column shift. His car can go from Park to L1 without breaking anything. The indicator can be adjusted so that it sits a little farther left of Park and that will keep the L1 from bottoming out.
     
  17. Canadian GS 350

    Canadian GS 350 Well-Known Member

    Thanks Greg
     
  18. gs66

    gs66 Silver Level contributor

    Is this a good core for rebuilding? It’s not one of the performance codes listed. 7C0CBD45-3ADB-48C7-BCBC-36A455572471.jpeg
     
  19. inverse121

    inverse121 Well-Known Member

    There are better choices that are harder to find, but that will work for a cruiser if you aren't going to ring it out past 4500-5000 rpm.

    From where you are located, drive up to French Lake in Wright County and talk to them, they might have something better. Lots of derby up there, they don't need or want the overdrive trans.
     
    techg8 likes this.
  20. gs66

    gs66 Silver Level contributor

    Thanks, it’s going behind a nailhead so much over 5,000 RPM gets pretty optimistic! Since it will be rebuilt can’t we just put in the high performance parts to achieve the same durability? I will continue looking for one with the codes Ken posted though.
     
    techg8 likes this.

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