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What is this exhaust part?

Discussion in 'Tech Discussion' started by 80BrownK10, Jan 18, 2021.

  1. AuroraGirl

    AuroraGirl Full Access Member

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    I
    have a used manifold butterfly but not the valve to operate it
     
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  2. Octane

    Octane Full Access Member

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    Cut out the old butterfly or lock/weld it open. I removed my 4 bbl carb butterfly.Now my truck is a two speed tho. Wide open and stop.What else does one need?
     
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  3. DoubleDingo

    DoubleDingo When In Doubt, Throttle Out

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    An on/off switch!
     
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  4. 78C10BigTen

    78C10BigTen Full Access Member

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    My 78 had this also but swapping motors i swapped the whole exhaust over to headers and custom exhaust and deleted the whole shebang.
     
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  5. Octane

    Octane Full Access Member

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    Or just enough gas for the 1/4 mile?
     
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  6. AuroraGirl

    AuroraGirl Full Access Member

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    Boost?
    another 4 barrels?
    all that intakes gonna need some more flow ability
    perhaps a few more inches on the exhaust diameter, for funsies or research?
     
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  7. Octane

    Octane Full Access Member

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    All I could afford at the time was two and a half inch pipes with flowmasters, no boost. But as Dale Earnhardt said, winning is based on that distance between the bottom of your accelerator and the floorboard?
     
  8. AuroraGirl

    AuroraGirl Full Access Member

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    Praise dale raise hell
     
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  9. Jimmy84

    Jimmy84 Junior Member

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  10. Jimmy84

    Jimmy84 Junior Member

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    AuroraGirl:
    Would you send me the thickness of the valve housing?
    My 1994 5.7 doesn't use crossover so I don't need a functioning valve, I just need one that's the correct thickness to make my new y-pipe bolt up correctly.
    If the Valve that you have is thinner than the adapter I have currently, I may be interested in purchasing yours. Please let me know. Thank you
     
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  11. AuroraGirl

    AuroraGirl Full Access Member

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    I’ll get the thickness and ID of the opening for you
     
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  12. AuroraGirl

    AuroraGirl Full Access Member

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    It’s a 2 inch opening and 1.08 inches or just about 28mm thick, hard to tell the intended thickness with the rusty build but it’s just over an inch could easily shave.
    The opening is oval on the one side snd the circular is where I got the measurements. I’ll post pics of valve and manifold
     
  13. AuroraGirl

    AuroraGirl Full Access Member

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    9428 and 16 are numbers on the weight for the butterfly no idea what for moves freely. Something tells me you need 2.5 tho? I can check other manifolds

    8B13F412-2FFF-4E02-8A8F-C979F529158C.jpeg

    99122021-5833-4127-9208-D25BBB12B25C.jpeg

    6AA1BC83-5F93-48A4-9CCE-78DB4472706D.jpeg

    27AD737B-27FC-4001-8E64-B73540E0D4EE.jpeg
     
  14. AuroraGirl

    AuroraGirl Full Access Member

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    ? I found a thicker one unknown dimensions if you wanted me to measure I’d guess about 30% thicker but idk
     
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