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Thread: Spark plugs

  1. #1

    Default Spark plugs

    How often do u need 2 change the Spark Plugs....

  2. #2


    What year, type, engine and truck???

  3. #3

  4. #4


    Quote Originally Posted by doss View Post
    2005,Chevy,Small V8,1500
    G.M. said they are good for 100,000 miles.....but you can put in new ones before.......I changed my out at 80,000 miles.....

    The Vortec engines run Better....with A/C Delco plugs......Of the A/C Delco plugs,you would want to get the A/C Delco Iridium Spark Plugs,also.....take a look at the plugs wires....and there you could go with A/C Delco or Aftermarket wires.
    Last edited by 99'HEARTBEAT; 07-26-2010 at 07:32 PM.


    5.3 l 3.73 l G80

  5. #5


    I also have a '05 with 5.3. I changed mine at 80,000 miles. They looked good and most likely would have gone 100,000 miles,but I had them out so I changed them and saved the old ones for a emergency. As 99'Heartbeat said go with A/C Delco Iridiums. You can get them at AutoZone stores.

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  7. #7


    Also, I let my truck sit overnight to let the aluminum heads get cool, to help keep from striping the heads. Use anti-seize on the new plugs and torque to speck.

  8. #8


    whats the gap on the spark plugs for a 2003 silverado 4.8 v8
    cuz where it shows that info on my truck got a blurry so i dont know
    2003 Silverado Extended Cab
    AEM Brute Force Intake
    PowerAid Throttle Body Spacer
    Diablo Sports Predator Programmer
    Borla Stainless Steal Shorty Headers
    Magnaflow Hi-Flow Cats
    Borla Stainless Steel Cat-Back Dual Split Side Exhaust
    20 inch OEM 5 Spoke Chrome rims with 305/50's
    2 12' Rockford Fosgate Subs w/ Kickers Tweeter's
    55 Watt 6K HID Lights

  9. #9


    Quote Originally Posted by AL3X View Post
    whats the gap on the spark plugs for a 2003 silverado 4.8 v8
    cuz where it shows that info on my truck got a blurry so i dont know
    For your 4.8 liter....The Gap for the.....A/C Delco Iridium Spark plugs is....0.40......they are already Gaped right out of the Box,from the factory.

  10. #10


    How much does autozone want for the AC Delco plugs? I found them on Summit Racing for $6.95 a piece. They recommend Loctite Copper Anti-Seize Stick and a Taylor Spark Plug Boot Removal Tool, is the boot removal tool really needed? And is there a special tool to make sure you tighten them to spec?
    2003 Silverado 2500HD 6.0L Vortec V8
    2" Body Lift
    3" Suspension Lift
    Skyjacker Hydro 7000 Shocks
    Skyjacker Steering Stabilizer
    35" Tires with 20" American Racing Rims
    Velocity Cold Air Intake
    Billet Throttle Body Spacer
    BBK Performance Headers
    MBRP Cat-Back Exhaust System
    DiabloSport Predator- Soon to be tuned by Diablew

    "Soon to be leveling-kit"

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