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Thread: SBC spark plugs
          
   
   

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  1. #16
    Driver50x's Avatar
    Driver50x is offline CHR Member Visit my Photo Gallery
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    That Plymouth is sharp!

    I recently put a new set of AC plugs in my 95 Camaro, which has a V6. It ran good for about 500 miles. Then it started having an intermittent, random misfire for the next 500 miles. It eventually turned into a solid miss. One of the plugs had failed. The plug looked fine, but I changed just one plug and the engine runs great now. I’d never seen that before. Maybe it’s time to switch to NGK or something.
    rspears and 33plym like this.
    Steve

  2. #17
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    NTFDAY is offline CHR Member Visit my Photo Gallery
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    As I stated earlier I've had good luck with E3's in my Vette and I also run then in an 04 Dodge Dakota. A couple of years ago I drove from Springfield, Mo to Columbia, SC, about 870 miles one way, in the Dakota and averaged right at 20 mpg. Not too bad for a pickup and a driver with a heavy foot.
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  3. #18
    DennyW is offline CHR Member Visit my Photo Gallery
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    Just some added info on spark plugs. They have changed over the years. Same as plug wires.
    This site has a LOT of info that is very informative about spark plugs.



    Driver50x, those plugs may have a resister in them. It is a common problem on some, the resister does not make good contact, and soon, it try's to spark past that, and then, spark past the gap. Miss fire happens.


    Anyway, there is a lot to know when it comes to the final wire and plug installations. Brands included.



    https://www.aa1car.com/library/origi...park_plugs.htm

    SPARK PLUG BRANDS

    Years ago, most vehicle manufacturers used only one brand of spark plugs in their engines:

    AC Delco in GM engines

    Motorcraft or Autolite in Ford engines

    Champion in Chrysler engines

    Bosch in European makes

    NGK or DENSO in Asian makes

    In most cases the vehicle manufacturer either owned the spark plug supplier, or had a long historical relationship with that supplier. But globilization and competition has changed that once-cozy relationship. Today, you may find some GM or Ford engines factory-equipped with Bosch spark plugs, Mazda engines equipped with Motorcraft spark plugs, Chrysler engines equipped with NGK or DENSO spark plugs, and so on. Most late model Saturn engines use NGK spark plugs. Kia and Hyundai may come factory-equipped with either NGK or Champion spark plugs. Some vehicle manufacturers still rely on a single spark plug supplier, but most use a mix of suppliers, even for the same engine.

    For example, a late-model Chrysler V6 may come factory equipped with a Champion spark plug, a NGK spark plug or a DENSO spark plug. All are "factory approved" for the application, so which plug is used on any given day may depend where the engine is assembled, which supplier shipped the vehicle manufacturer a container of spark plugs that day, and so on.
    glennsexton likes this.

  4. #19
    33plym is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by Driver50x View Post
    That Plymouth is sharp!

    I recently put a new set of AC plugs in my 95 Camaro, which has a V6. It ran good for about 500 miles. Then it started having an intermittent, random misfire for the next 500 miles. It eventually turned into a solid miss. One of the plugs had failed. The plug looked fine, but I changed just one plug and the engine runs great now. I’d never seen that before. Maybe it’s time to switch to NGK or something.
    Thanks for the compliment on my car
    That’s exactly what happened to me. Cant buy much of anything thats good anymore I do have autolites in it now and so far its running great

  5. #20
    33plym is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by NTFDAY View Post
    As I stated earlier I've had good luck with E3's in my Vette and I also run then in an 04 Dodge Dakota. A couple of years ago I drove from Springfield, Mo to Columbia, SC, about 870 miles one way, in the Dakota and averaged right at 20 mpg. Not too bad for a pickup and a driver with a heavy foot.
    Yep, i ran them e3s in my dodge ram and it did get better mileage. Not much but anything in that hog was a bonus
    NTFDAY, rspears and 36 sedan like this.

  6. #21
    Kylet7 is offline CHR Member Visit my Photo Gallery
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    Ngk

     



    I run NGK. For a sbc i believe the correct gap is .035
    rspears likes this.

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