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  1. M

    Spark Plugs On A Magnum Crate Motor?

    ANYONE KNOW WHAT PLUG BLUEPRINT ENGINES USE ON A 408 CRATE MOTOR .WHAT THE 375 HP WITH 9.8 to 1 COMP SHOULD USE ? I JUST GOT A CAR WITH THE 408 ENGINE AND IT HAS A CHAMPION C59YC IS THIS THE CORRECT PLUG ? THANKS JAMES
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