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Spark plugs

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  • Mark B.
    Very Frequent User
    • March 8, 2017
    • 119

    Spark plugs

    What spark plugs are you using on your big block. L36 motor?
  • Ralph P.
    Very Frequent User
    • February 1, 1990
    • 253

    #2
    Re: Spark plugs

    Experts here generally agree on a "45" series plug... AC R45 XLS for example. Original 43's are too cold.

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