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Buick Manifold Interchange

Discussion in 'Early CJ5 and CJ6 Tech' started by Duff, Feb 11, 2021.

  1. Feb 11, 2021
    Duff

    Duff Member

    Trump Country
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    If I was to convert my 70 CJ5 over to manual saginaw steering it looks like I'd have to replace the DS exhaust manifold with a later model one. What years and body style of buick would I have to find?
     
  2. Feb 11, 2021
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member 2021 Sponsor 2020 Sponsor

    Denver, CO
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  3. Feb 11, 2021
    4S50

    4S50 I’m back! 2021 Sponsor

    Point Arena, CA
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    834B07F0-9021-4A1B-9EDF-42A237AA1A17.jpeg I am using the flat one from, (I think), a 1977 Buick lesabre. I had to grind the manifold slightly to clear the steering shaft.
     
    Last edited: Feb 17, 2021
  4. Feb 12, 2021
    jeepdaddy2000

    jeepdaddy2000 Member

    Eagle Point oregon
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    Simplest (maybe not the best) solution is fenderwell headers.
     
  5. Feb 12, 2021
    Steve's 70-5

    Steve's 70-5 Active Member 2020 Sponsor

    Louisville, Ky
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    A rear dump exhaust manifold is what is used. I got my steering to work with the front dump exhaust.
     
  6. Feb 16, 2021
    Randy Benedict

    Randy Benedict Member

    Center, MO
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    I think I have one
     
  7. Feb 16, 2021
    Duff

    Duff Member

    Trump Country
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    PM sent
     
  8. Feb 17, 2021
    garage gnome

    garage gnome Rust polisher 2021 Sponsor 2020 Sponsor

    Western MA
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    I took a front dump one and cut it to re-angle it and it worked perfect.

    [​IMG]

    [​IMG]
     
  9. Feb 17, 2021
    colojeepguy

    colojeepguy Colorado Springs

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    X2, but it's very tight.
     
  10. Feb 18, 2021
    Steve's 70-5

    Steve's 70-5 Active Member 2020 Sponsor

    Louisville, Ky
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    Had to flatten the exhaust pipe some. The exhaust shop that redid my exhaust system for the rear tank saw no problem with what I did.
     
  11. Feb 18, 2021
    colojeepguy

    colojeepguy Colorado Springs

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    Same thing here.
     
  12. Feb 18, 2021
    SFaulken

    SFaulken Member 2021 Sponsor 2020 Sponsor

    Marysville, WA
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    Bashing headers/exhaust pipes for clearance causes almost zero performance loss. Engine Masters did a dyno test where they just took a sledgehammer to a pair of headers, and the "performance loss" was almost statistically insignificant, and this wasn't on a low-compression stock little street engine. Unless you're bashing it absolutely flat and creating a serious restriction, bash away as necessary.
     
    Fireball likes this.

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