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Thread: Witch spark plugs for alky carb??

  1. #1
    Senior Member SENIOR BUILDER
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    Witch spark plugs for alky carb??

    I normally run a AR3933 on gas. I am new to the alky stuff and was just currious what everyone else is running with a carb and alky..... It is a APD 1150 going on a 540 in a dragster if that helps any.
    OSCA PROSTREET CHAMPION 2006
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    2009 PRO STREET CHAMPION LONDON DRAGWAY 4.69 @153.00 3200LBS

    2011 LONDON DRAGWAY RECORD HOLDER IN PRO STREET 4.66 @153.00

  2. #2
    Senior Member DYNO OPERATOR
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    witch

    NGK R-5671A-9 alcohol. -8 for gas

  3. #3
    Senior Member RACING JUNKIE
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    Coldwater, MI
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    Re: Witch spark plugs for alky carb??

    Quote Originally Posted by SPEEDNEEDS1
    I normally run a AR3933 on gas. I am new to the alky stuff and was just currious what everyone else is running with a carb and alky..... It is a APD 1150 going on a 540 in a dragster if that helps any.
    3910 and index
    David Lanning
    IHRA NHRA 387B

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

  4. #4
    Senior Member SENIOR BUILDER
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    Thanks, I would have been lost with the 3933.
    OSCA PROSTREET CHAMPION 2006
    4.87@143.50 1.13 ALL AT 3200LBS

    2009 PRO STREET CHAMPION LONDON DRAGWAY 4.69 @153.00 3200LBS

    2011 LONDON DRAGWAY RECORD HOLDER IN PRO STREET 4.66 @153.00

  5. #5
    Senior Member RACING JUNKIE
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    La.
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    I run both autolite and NGK, but like David says you really have to index the Autolites, because of the longer tip.

    JMO

    Zip.


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