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Thread: Spark Plugs?

  1. #1

    Default Spark Plugs?

    Howdy Gang!

    I'm new to these parts and I have a spark plug question.

    I have a 2001 5.3 engine and I want to replace the plugs. I was warned away from the Bosch Platinum 4 tip plugs. I was told that domestic vehicles didn't fire hot enough for that plug.

    Anyway . . . .which higher performance plugs have some of you successfully used? Which would you recommend?


  2. #2


    I was told not to use that type either. I changed out mine with autolite plugs, nothing fancy, and since they are cheap I do it once a year.

  3. #3
    Legend unplugged's Avatar
    Join Date
    Sep 2006
    High Deserts of SoCal


    Failed my smog check last week, so I'm due for plugs and filters. Not really into changing plugs, but hanging around here I feel obliged to change my own. Been a big fan of Autolite (not motorcraft) but am interested in trying a set of ND iridium plugs. Think I'll pick up a set today. Standby for an update..................

    Changed the plugs last night. Went with Autolite Platinums, cuz $12.99 ea. for iridium plugs is too rich for me. Going back for a retest this morning. I'm crossing my fingers. btw, the old plugs really didn't look too bad except for cyl 1 & 3.
    Last edited by unplugged; 10-22-2007 at 07:53 AM. Reason: New info
    There is no way to happiness....happiness is the way.:yipi:  _vXMYypuKMJFw671uF2ZPhjez_j-atRmcjM2zQKpQi1JSsB75/burb1.JPG
    High Desert SoCal
    93 K1500 burb (personal) 350 AT 3" Lift 250K+
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  4. #4


    Not sure if this applies to any GM products, I had a Dodge Durango which I pulled the original plugs a 75,000. I put Bosch platnums in and noticed right off it ran different, not better a little off. I know the Dodge dealer well he told me to go back to stock plugs as the platnums messed with the computer. I have a 97 GMC 5.7 that I did the same swap on it runs just fine, I also have an 02 Chevy Sub that I am thinking of swapping over.

    Happy 2 Wheeler!

  5. #5


    the set that was in mine was the dual split fires-the terminals were burned off the disti cap. i replace with a goos set of Bosh replacements and no issues yet......mike
    Michael Collins
    1993 4X4 Suburban
    many other toys as well

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