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Thread: spark plug help!

  1. #1

    spark plug help!

    i have a scott shaffiroff 406 sbc with brodix track 1 heads i am running autolite 3932 plugs are these correct!! i am having a miss above 5500 rpm. i am also running 38 degrees timing. thanks for any help!!

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    May 2003
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    Coldwater, MI
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    2,998

    Re: spark plug help!

    Quote Originally Posted by finley2005
    i have a scott shaffiroff 406 sbc with brodix track 1 heads i am running autolite 3932 plugs are these correct!! i am having a miss above 5500 rpm. i am also running 38 degrees timing. thanks for any help!!
    They should work or a 3910 miss above 5500 normally a plug missed all the way. Have you pulled them to make sure they look good ?
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  3. #3
    i have pulled them they are very sutty black! thats just from a idle not wide open throttle. i looked at them today after its been sitting for a week and they look like they have gathered moisture and a small sighn of rust! is that normal for one that has been sitting for a week without being started?

  4. #4
    Senior Member MASTER BUILDER
    Join Date
    Apr 2006
    Location
    Ms.
    Posts
    191
    If this is not a NOS engine those plugs are waayy to cold. I use AR3933 plugs with 700 hp of nos, you need to go up a couple of heat ranges.
    Unpredictable Pro Mudd Racing
    2009 MRA Pro Mod Champion
    3 time National Record Holder

    http://i251.photobucket.com/albums/g...mud/3158-1.jpg


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