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Thread: Spark Plugs

  1. #1
    Sr. Apprentice
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    Mar 2006
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    Pasco, WA
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    Default Spark Plugs

    What kind of spark plugs do you all use?

    I just installed new plugs monday and went for NGK TR55IX Iridiums....they seems to work alright, not much different than stock but still cost me 6.99 each!

  2. #2

    Default

    Mine are factory all the way. Not even at 100k yet so I haven't changed them.

    Steve
    10 Chevy Traverse LT AWD
    02 Chevy Trailblazer LS (110K+ miles - loaded except for 4WD - WRECKED!)
    99 Chevy Cavalier LS (105K+ miles - commuter car)
    78 Chevy Suburban Silverado (454, 3/4 ton)
    62 GMC 3/4 ton Pickup (350 police interceptor)

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  3. #3
    Sr. Apprentice
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    Pasco, WA
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    Default

    Well when I pulled mine out they said ACdelco on one side and NGK on the other haha what the heck.. (the plug itself had both ACdelco and NGK). I noticed my idle isnt as smooth with these plugs but my mid range power sure came back! My truck doesnt quite have 80K on it.

  4. #4

    Default

    At first I thought that you meant that one side of the engine had one type of plug and the other side had another. Someone was drinking early at the factory that day!

  5. #5
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    Default

    hehe thats why i put "the plug itself" haha i knew i'd confuse you :P

  6. #6

    Default

    What's the deal with that? Are ACDelco and NGK together now?

  7. #7
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    Default

    I have no idea, I just read that the Vortecs run great with either the OEM AC delco or the NGK plugs. So I went and bought the NGKs because they were cheaper (still turned out to be expensive because they were pretty much direct replacement for the OEM plugs)...but when I pulled the plugs out I saw the normal AC delco logo but on the direct opposite side of the plug it said NGK hahaha.....I'm sure NGK makes the plug but AC delco licenses it or some deal....

  8. #8

    Default

    Yeah, you can never really know these days. So many companies are buying other companies. Other companies are simply working together to pool resources, save on costs, etc.

    Anyhow, you're happy with your ACDelco/NGK plugs? That's all that matters if the quality is good.

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