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Thread: Which Spark Plugs

  1. #1
    Senior Member MASTER BUILDER
    Join Date
    Aug 2007
    Iowa - USA

    Which Spark Plugs

    I havn't seen much discussion on proper spark plugs to use. I'm at a loss and I would appreciate some help. Car is blown bbc on gas. Ignition is a msd 6al. I also wonder if there is enough ignition for this engine.

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    May 2006

    How much boost are you running?

    I recommend NGK racing plugs.

    A 6AL would probably surfice for the street with minimal boost but if your racing and stuffing it pretty hard, I'd go on up to the 7 series.

    ***IN GOD WE TRUST***

  3. #3
    Senior Member MASTER BUILDER
    Join Date
    Dec 2005
    Napier, New Zealand
    It depend on the engine build whether you need long reach or short reach. I found Autolite plugs to be the best design.
    It Ain't Over Til Its NOVA - 634ci of S*#t Your Pants!

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