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Thread: what spark plug and gap

  1. #1
    Senior Member EXPERT BUILDER
    Join Date
    Dec 2002
    spring creek nv.

    what spark plug and gap

    my brother bought a set of the bbc pro comp heads for his street machine.468bbc;.he has the thumper cam and 10.25 comp pistons/team g intake and i think a 750 demon carb[vacume sec.]single pump dist with the 6-al box...what plugs should he be using?[as to reach and heat range]and what plug gap

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    May 2006
    NGK #7's or #8's gapped no wider than .035

    ***IN GOD WE TRUST***

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