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Thread: Headers for 69 chevelle?
          
   
   

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  1. #16
    firebird77clone's Avatar
    firebird77clone is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: 69 nomad, 73 charger, 74 vega
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    #5 mod complete.
    Last edited by firebird77clone; 03-22-2016 at 04:24 PM.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  2. #17
    rspears's Avatar
    rspears is offline CHR Member/Contributor Visit my Photo Gallery
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    You mentioned that you hoped to solve a problem of blowing out exhaust gaskets with your modification. I'd say that there's little chance of that problem being solved, looking at those flanges. Quality headers have 3/8" thick flanges to eliminate warping with heat and pressure, and cheaper headers have 5/16" or even 1/4" thick. Yours look to be more like 1/8" to 3/16" but it may be the camera angle fooling the eye.
    Roger
    Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.

  3. #18
    firebird77clone's Avatar
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    #3 mod complete
    Last edited by firebird77clone; 03-22-2016 at 04:24 PM.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  4. #19
    firebird77clone's Avatar
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    'Tis the camera angle. They're 1/4"
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  5. #20
    firebird77clone's Avatar
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    FAIL.

    You are a no- go at this station.

    Report to your first- line supervisor for additional training.

    #3 down tube is still too close to #5 plug.
    Pulling it back off.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  6. #21
    Rrumbler is offline CHR Member Visit my Photo Gallery
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    Good to see that you took on the challenge and got the outcome you were looking for; that's what this game is all about. I hope the flange problem does not recur, though, 1/4" flanges are pretty chancy, like Roger says; the first headers I had on my '59 had 1/4" flanges, and I was always fighting leaks. Put a set on with 3/8", and heavier tubes, and no more fussing around with them..

    .
    Rrumbler, Aka: Hey you, "Old School", Hairy, and other unsavory monickers.

    Twistin' and bangin' on stuff for about sixty or so years; beat up and busted, but not entirely dead - yet.

  7. #22
    jerry clayton's Avatar
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  8. #23
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    Possibly.

    I'll have it licked soon as I rework tube #3.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  9. #24
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    #3 completed again
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  10. #25
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    Success. I would like to have brought #5 out another quarter inch, but it is good.

    I'm also going to make booties for the wires using the heat wrap. That will give them an extra layer of heat protection.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  11. #26
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    do you run the plug wires over or under the headers?

  12. #27
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    More success!

    Swapping the edelbrock 2601 air gap to the edelbrock 7101 performer got rid of my cold - start and mid - throttle issues. I might even try swapping the 600 edelbrock back to the 750 and see how it does.

    This whole time it's been running the wrong plugs. It had the short - nosed plugs, needs the long - nosed.
    I also found the dizzy cap contaminated with oil, probably from the rear breather cap. Since I have the PCV on that side, I plugged that breather. Cleaned the cap with contact cleaner and compressed air. New wires - #5&6 were fried.

    Altogether, it's never run this smooth.

    Kind of supports the old adage:

    If you want it done right, do it yourself.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

  13. #28
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    Jerry - both over and under, whichever provides the best protection to each wire.
    .
    Education is expensive. Keep that in mind, and you'll never be terribly upset when a project goes awry.
    EG

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