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Plug Gap - Different brand / different gap ??

Discussion in 'GM Powertrain' started by rski43, Jun 23, 2009.

  1. rski43

    rski43 New Member

    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
  2. 2COR517

    2COR517 New Member 1000 Posts

    Run your plugs at .040. You'll be much happier.
  3. L0sts0ul

    L0sts0ul New Member

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

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