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  1. #1

    Question GT 40 HEADS,,,, SPARKPLUG QUEST.

    WHAT SPARKPLUG ARE U RUNNING WITH GT40 HEADS.

  2. #2
    FEP Super Member embler's Avatar
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    I ran autolites when I had mine. to make it easier at the parts store, I just simply asked for plugs for a '93 cobra. they are one step colder than for regular heads.
    "I'm a mental patient, I'm suppose to act out!"

  3. #3
    FEP Senior Member
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    Motorcraft AWSF-32C or Autolite 764's. Both are the same plug.
    1986GT C9 351W. T-3550
    Inner & Outer subs
    Griggs GR40 Suspension
    Panhard bar & Torque arm. Tub Kmember and A-arms.

    1982GT w/rear wiper

    http://home.comcast.net/~mike82gt/82...d/MVC-558S.JPG
    http://home.comcast.net/~mike82gt/MVC-001F.JPG

  4. #4
    FEP Super Member MurPHy's Avatar
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    Autolite 764 here.
    1990 Mustang LX 5.0 - Ran into a tree (fixed!)
    2005 Ranger XLT 4x4 - Daily Driver/Tow vehicle
    1992 Mustang LX 2.3 - MPG baby yeah!
    1994 Explorer - Fix 'n Flipper

  5. #5
    FEP Super Member embler's Avatar
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    Quote Originally Posted by mikejb View Post
    Motorcraft AWSF-32C or Autolite 764's. Both are the same plug.
    aren't the AWSF plugs for 86's? I think its ASF for the others. I may be wrong and I'm too lazy to go look at what I have for mine, lol.
    "I'm a mental patient, I'm suppose to act out!"

  6. #6

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    E6SE and GT-40 heads both use AWSF.

  7. #7
    FEP Senior Member
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    The "W" in the part number is for longer threads in the plugs.
    1986GT C9 351W. T-3550
    Inner & Outer subs
    Griggs GR40 Suspension
    Panhard bar & Torque arm. Tub Kmember and A-arms.

    1982GT w/rear wiper

    http://home.comcast.net/~mike82gt/82...d/MVC-558S.JPG
    http://home.comcast.net/~mike82gt/MVC-001F.JPG

  8. #8
    FEP Super Member 82mustang's Avatar
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    i ask for plugs that fit a 93 or 94 cobra...autolite something or other. I need to buy a few spares so i can check the jetting on the carb, thanks for the remonder
    86' Coupe Street/Strip Never Ending Project-351w, 4 Wheel Disk, WC T5, etc...

    Link to my car Pics:
    http://smg.photobucket.com/albums/v414/hyper7pbs/

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