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Thread: Plugs & Gap for FI?

  1. #1
    Join Date
    Aug 2004
    Posts
    185
    What kinda plugs does everyone suggest for FI? I like NGK but forget the #. Currently I am running the stock plugs with the stock gap. What plugs should I get? Guessing they should be gaped at around .035? Also will I notice any gains by doing so? I am thinking I should, being that I am at 7psi I am thinking that my cylinder pressures are a bit high for the stock plug with the stock gap. Thanks for the help.
    04 Sierra Denali
    Blown,Cam'd,stall'd etc.

  2. #2
    Join Date
    Apr 2003
    Location
    Mansfield, Texas, USA
    Posts
    2,462
    I've used NGK TR6's in the past with a decent shot of nitrous, they worked fine.

    Run copper core incase the electrode burns off so you're out ~$1.50 vs $6 for an iridium plug.
    The superior man is modest in his speech, but exceeds in his actions. - Confucius

    "He who asks of life nothing but the improvement of his own nature, is less liable than anyone else to miss and waste life."- Henri Frederic Amiel

    '01 Chev Z71 LT - '85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 240D - '79 MB 280S Euro
    '80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 300SE - '91 MB 560SEL

    Let's face it, the red hair... makes 'em wet.


  3. #3
    Join Date
    Aug 2004
    Posts
    185
    Where is everyone at, Including Allen? Is there some big party somewhere that I am missing?
    04 Sierra Denali
    Blown,Cam'd,stall'd etc.

  4. #4
    Join Date
    Apr 2003
    Location
    Mansfield, Texas, USA
    Posts
    2,462
    Or don't take my advice.
    The superior man is modest in his speech, but exceeds in his actions. - Confucius

    "He who asks of life nothing but the improvement of his own nature, is less liable than anyone else to miss and waste life."- Henri Frederic Amiel

    '01 Chev Z71 LT - '85 BMW 745i TURBO - '88 BMW 750iL - '88 Ford F150 XLT Lariat - '79 MB 240D - '79 MB 280S Euro
    '80 MB 380SE-5.0 Euro - '85 MB 300SD - '87 MB 300SDL - 1990 MB 300SEL - '91 MB 300SE - '91 MB 560SEL

    Let's face it, the red hair... makes 'em wet.


  5. #5
    Join Date
    Jun 2004
    Location
    george west texas
    Posts
    3,694
    yea...ngk tr6 gapped at .035 is what you want....
    '13 silverado LT...stock

    '11 lt 4x4 z71..tvs1900

    '01 gmc twins 6.0 jakes 400 ladder bars w/ coilovers tuned by nelson performance

  6. #6
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Gapped at .35" ? Damn, you must have some super hot ignition coils there Alton!!! I have a hard time keeping the candles lit at only .035".
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  7. #7
    Join Date
    Jun 2004
    Location
    george west texas
    Posts
    3,694
    whoops!!!
    '13 silverado LT...stock

    '11 lt 4x4 z71..tvs1900

    '01 gmc twins 6.0 jakes 400 ladder bars w/ coilovers tuned by nelson performance

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