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  1. #1

    Default Plug Gap - Different brand / different gap ??

    Does any one know why some brands of Iridium plugs spec a .060 gap while the AC Iridium is gaped at .040???

    Autolite XP Iridium => .060

    Every vendor I look at has the gap at.060 & the Autolite website too.

    THX,
    -RJK

    '10 Silverado 1500 LS 4.8 & '10 'Nox LT

  2. #2

    Default

    Run your plugs at .040. You'll be much happier.
    When you hear hoofbeats, look for horses not zebras.

  3. #3
    Jr. Engineer
    Join Date
    Feb 2007
    Location
    Edmonton, Alberta, Canada
    Posts
    298

    Default

    upgrade to a MSD ignition setup, gap to .075... then watch the fun.

    1993 K1500 Suburban 350TBI, 378,486KMS on frame, 49,000KMS on Drivetrain. Lots of mods, built for haulin trailers and haulin @$$ :)

    2000 K2500 Yukon XL 6.0L Vortec 252000KMS custom CAI, and exhaust...but not done yet.

    "If you are dumb enough to do something you don't know how to do, and can't do it safely then WHEN you get hurt its your own fault...BONEHEAD"

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