604 spark plug gap

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  • mqdirtracer57
    Senior Member
    • Mar 2008
    • 493

    #1

    604 spark plug gap

    I am using 7317 NGK plugs...what should I gap them at? MSD ignition and using c12 racing fuel
  • pcope98
    Senior Member
    • Jan 2009
    • 225

    #2
    i normally set them at .35 never any issues yet... goin on 4 years

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    • sd13
      Junior Member
      • Nov 2009
      • 12

      #3
      ive been runnin 45 on the autolites bout 6 years now and change em maybe twice a year.

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      • Chris Steele
        Senior Member
        • May 2007
        • 1123

        #4
        .045 here too
        www.joegibbsracingoil.com

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