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Thread: spark plug gap

  1. #1
    Junior Member
    Join Date
    Dec 2005
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    21

    spark plug gap

    im getting a set of ngk tr55s for my '02 c5 ls1, what should the plug gap be for the best performance?

  2. #2
    Junior Member
    Join Date
    Aug 2005
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    Co
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    48

    NBM
    2000 Vette

    I am pretty sure the manuals say anything between .055 and .060 is good for the LS1. But I know a few guys when switching to NGK's are setting theres at .050

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