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C2 spark plug gap

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  • John P.
    Very Frequent User
    • August 31, 2002
    • 215
    #1

    C2 spark plug gap

    It is time to change plugs, i have always used A/C Delco 45S plugs, decided to try Denso on my 1965 L79 convertible.

    Should I gap these replacements exactly as the Delcos? I have to admit I have never thought of this issue before.

    Thanks for all input.
    Tags: None
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    • Leif A.
      Extremely Frequent Poster
      • August 31, 1997
      • 3600
      #2
      Re: C2 spark plug gap

      Yes same .035 gap.
      Leif
      '67 Coupe L79, M21, C60, N14, N40, J50, A31, U69, A01, QB1
      Top Flight 2017 Lone Star Regional
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        • Duke W.
          Beyond Control Poster
          • December 31, 1992
          • 15597
          #3
          Re: C2 spark plug gap

          Extended tip plugs - the S suffix - were not OE, but the Denso W14-U is equivalent to the non-resistor, out-of-production AC 45, which would be a good choice as is the NGK B4.

          Duke
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