460 spark plugs?
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460 spark plugs?

  1. #1
    Senior Member rpm0414's Avatar
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    Default 460 spark plugs?

    All the ford gurus .... Want to pick up some spark plugs and was wanting input. Have dove heads. 9.7-1 comp. 230 @.050 cam. 475-500 hp. Any recommendations??

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    I use NGK brand plugs, dont know the # but stock for that head/engine. I think I gapped mine at .035

  4. #3
    tintingsandiego krusn56's Avatar
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    I ran ngk 4 gapped at 42 for years. I have autolight 25 gapped at 42 in now. d3 heads
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  6. #4
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    i have always used motorcraft plugs in all my ford applications.i have seen engine performance issues with autolites,fords dont seem to like them.the motorcraft part number is ASF-42C

  7. #5
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    Ngk in my dove-c heads.


    Yes brotha's have iPhones too!

  8. #6
    JRPM/e-PerformanceMarine Squirtin Thunder's Avatar
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    With the MSD I run .045 & .035 without MSD on all my Iron heads. Plugs are up in the air, everybody like one brand or another. I like the Accel header plugs with the U groove. Now I take those and put a 1/16" V in the end and that works for me.
    Last edited by Squirtin Thunder; 02-12-2012 at 11:10 AM.
    Jim & Amanda Rich
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    JR Performance Motorsports

  9. #7
    Senior Member rpm0414's Avatar
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    Ngk 4 or ngk 5 better?

  10. #8
    tintingsandiego krusn56's Avatar
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    UR4 Are a hotter plug. Didnt like the UR5 which is cooler than the autolight 25 and ur4
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