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  1. #1
    New England Forum Moderator twitch's Avatar
    Join Date
    Mar 2005
    Location
    New Bedford, MA
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    15,838

    quick plug question

    my service manual say I should be running Ql77jc4 and I'm running Ql78yc whats the difference and is it ok
    1990 374V Ranger Still kickin' bass after all these years

  2. SC Club Moderator ChampioNman's Avatar
    Join Date
    May 2004
    Location
    Crawfordville, FL/Lake Hartwell, SC
    Posts
    72,198
    #2

    Re: quick plug question (twitch)

    Either one is good as long as they are gapped at .030.

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