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Thread: Spark Plugs

  1. #1

    Default Spark Plugs

    Ok my 06 GMC is getting ready for new spark plugs, any suggestions? I have the 4.8L.

    Thinking about Bosch+4....

    John

    06 Red GMC 4X4 CrewCab 4.8L
    MagnaFlow Muffler
    Lubed by AMSOIL...

  2. #2

    Default

    For me went I was ready for new plugs,I stay with A/C Delco. Iridium Plug's.But it depends on what you are looking for in a plug,and what Performance Mods you have put on your Ride.I've been pleased with the A/C Delco Plugs.I have not really looked into some of the aftermarket plugs,maybe someone else can give you some input on them

    MIKE


    99"SILVERADO
    5.3 l 3.73 l G80
    BLACK BEAR CUSTOM TUNE
    SNUGTOP l COLORMATCH l KATZKIN










  3. #3

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    NGK IXIRIDIUM are great plugs. TR5IX is the plugs for your truck I think.
    2008 GMC Sierra 2500HD Ex. Cab, Fire Red, 6.6L Duramax LMM Equipped with UTG Rocker Pods


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  4. #4
    Legend 2ToNe04's Avatar
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    Default

    i have bosch, i just replace the ones that came with my truck.

    never had a problem with them

    2004 4.8| Custom Paint| Tint| De-badged| Shaved Tailgate| Rollpan| Smoked Tails| Color Matched| Lowered 5/8| Suede Interior| Color Matched Interior| Indash & TVs| Mids-Lows & 2 12" CVRs| 500 & 1100 Interfires| Soundeadener| Outlaw CAI| Magnaflow|
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  5. #5

    Default

    Quote Originally Posted by detailjohn View Post
    Ok my 06 GMC is getting ready for new spark plugs, any suggestions? I have the 4.8L.

    Thinking about Bosch+4....

    Iridium plugs have it hands down over platinum. The GM iridium are designed for your combustion chamber and that's what I use. Everyone has their own favorite plug but if you Google "spark plug comparison" you can read up on spark plugs and decide for yourself. Have Fun!
    Jim

    2004 SILVERADO 2500HD LS
    Pro Comp Leveling Kit
    285-75-16 Cooper ST All Terrains
    Pro Comp Programmer
    Bilstein Shocks
    Linux Bed Liner
    Tinted Windows



    Other rides:

    1967 Landcruiser <350 Chevy>
    1970 Camaro
    1990 Geo Metro Convertible
    2007 FJ Cruiser

  6. #6
    Legend cascott325's Avatar
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    Default

    i run delco iridium
    2000 silverado with a 5.3l v8, shorty headers, upgraded plugs, 10 mil wires, magnaflow high flow cats, flowmaster 80 series muffler(2 in 2 out) w/ 18 inch stainless silverline tips. i have a k&n CIA. its a 4x4 z71 offroad package. Ls model.
    extended cab 160k miles, truxedo low profile bed cover, diablo sport predator tuner.
    reman tranny @ 130k miles
    Chris

  7. #7

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    if you get the bosch let me know how they work out im thinking of getting them for my truck
    2000 GMC Sierra Ext. Cab 5.3L

  8. #8
    Master Mechanic Dr_Zero's Avatar
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    Default

    I went with Denso TT and have been happy with them the link below has more info

    http://www.gmtruckclub.com/forum/sho...ighlight=spark
    My trucks!

    1996 GMC Suburban SLT
    1997 GMC Yukon SLT

  9. #9

    Default

    I just got Bosch +4 plugs in my truck last week. I can really tell a difference in throttle response and the ease in starting my truck. I seem to get more acceleration with them too, i also got new spark wires the day after, and i noticed another increase in the same areas with new wires. I recommend them, i like mine a lot.
    www.youtube.com/ippielb
    2002 Chevrolet Silverado 1500 z71 1985 Chevrolet Silverado k10 2006 Chevrolet Silverado 2500hd 6.6l LLY Duramax
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