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How often to change?

This is a discussion on How often to change? within the Firebird / WS6 forums, part of the Vehicle Specific category; Just like the title asks, how often do you guys change your spark plugs? And wires? I have MSD wires ...

  1. #1
    Senior Member clg82's Avatar
    Join Date
    Feb 2007
    2000 Trans Am

    How often to change?

    Just like the title asks, how often do you guys change your spark plugs? And wires? I have MSD wires and my car is a garage queen so how long do you suggest changing the wires and plugs?
    2000 Arctic White trans am, ws6 hood, ws6 air box, slp lid, slp smooth bellows, slp loudmouth exhaust,shift kit, rebuilt trans, LS6 intake, 3.73 gears, Shaner S3 p/p throttle body, and a tune . SFC. C6 ZO6 rims 18" in back 17" in front. Drilled and slotted rotors.

  2. #2
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Mansfield, PA

    Black & Blue
    '02 WS.6 / '07 Suburban

    Iridiums can go well north of 50,000 miles without a problem. Standard plugs I will run for no more than 25,000 miles. Probably change the wires every 5 years or 75,000 miles. You'll probably get a myriad of answers to this one.

  3. #3
    Auto Painter RyanJM's Avatar
    Join Date
    Dec 2007
    Houston, TX

    1998 Trans Am

    My car sits more than it drives, as far as my MSD wires they still look new after 3 yrs and have 15k on them so Ihave no need to change them. I figure if they start lookiing dryrotted or after like 5 or 5 yrs maybe. Plugs I change every 2 yrs usually probably could go longer but i like a fresh set every couple yrs. My original plugs were in the car for 10 yrs and almost 70k and were still not completely bad. Wires had to be changes under warranty since one went bad they put a new set on. So the wires were 6 yrs old.
    1998 Trans Am 85k miles.
    Bolt ons, MS3 113LSA cam, Circle D Stall, Tune, Modified WS6 style hood, Full Suspension, 6000k HID's, Clear Side Markers w/ Leds, Led 3rd Brake Light and 18" AR Staggered Killer Wheels w/ BFG KDW NT's.- Weekend Toy/DD
    02 Trailblazer -Sold
    09 Ram 1500 CC - Sold
    09 Cobalt SS/TC - Sold
    13 ram 1500 LoneStar CC 4x4 - Magnaflow, K&N,and more to come-DD/Toy

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