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Thread: Spark plugs

  1. #1
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    Spark plugs

    I have a 2010 Suburban, what are some thoughts for plugs?
    18 Talon/2.4 carb SOLD
    26 Deck Boat/250 Merc

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    ac-delco iridiums Won't have to change them again for 100k Or the plugs it came with from the factory, prob some platinums. They're good too.

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  4. #3
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    Thanks. I was thinking AC but with so many new plugs coming out over the recent years wanted to see if any of them would be recommended. Suburban forum stated AC OEM as well.
    18 Talon/2.4 carb SOLD
    26 Deck Boat/250 Merc

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    I have been told that it is USUALLY best to stick with what it came from the factory with. If it had platinum, use that, copper etc etc.
    I have followed that advice with good results so far. You can spend a lot of money on plugs if you are so inclined. Not sure about the ROI though.

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    My vote is for AC Delco also. Platinum or Iridium will be fine. If you are not in a bind, time wise, look at Rock Auto prices are better than local parts stores. Might want to consider plug wires also. On my 2000 Silverado the wires helped the rough idle.

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    Gap carefully, don't bugger up the electrode, don't let them drop to floor or roll around with each other loose in a bag. Crack one and it'll code or miss.

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    I assume your asking splitfire, v power, e3, that multi prong one,

    i have noticed no difference over stock plugs on my trucks 6.2

    the adaptive cam keeps them cleaner and if you run e-85 for more power stock plugs work best.

    If running less than 91 stop no plug will help that rich and retarded on that 10:1 engine even though it says you can.

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