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  1. #1
    Member
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    99 red 6mm coupe

    Default Latest AC Spark Plug # for LS1 Please

    99 Coupe 6mm 123,000 miles all stock. I require the latest # so that I can replace AC # 41 - 985 with 60,000 miles on them.
    Secondly, yes or no to Anti Seze or Mobil 1 on the threads ?

  2. #2
    Moderator catbert's Avatar
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    Stingray

    Default

    Quote Originally Posted by TheBigGuy View Post
    99 Coupe 6mm 123,000 miles all stock. I require the latest # so that I can replace AC # 41 - 985 with 60,000 miles on them.
    Secondly, yes or no to Anti Seze or Mobil 1 on the threads ?

    ACDelco Parts

    I don't use anything on the threads.
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  3. #3
    Member LLC5's Avatar
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    98 black 6spd convert.

    Default

    Quote Originally Posted by TheBigGuy View Post
    99 Coupe 6mm 123,000 miles all stock. I require the latest # so that I can replace AC # 41 - 985 with 60,000 miles on them.
    Secondly, yes or no to Anti Seze or Mobil 1 on the threads ?


    I have used anti-seize on spark plug threads for decades with no problems.

    GM says not to use anti-seize, only use a drop of engine oil.
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  4. #4
    Technical Advisor c4c5specialist's Avatar
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    Nope, but someday.

    Default

    Hi there,

    41-110 is the correct plug and DO NOT REGAP THEM!!!!

    Also, engine oil and torque to 11 ft lbs.

    Allthebest, c4c5
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  5. #5
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    99 red 6mm coupe

    Default

    What happened to Corvette Mechanic ? I came here because I could't get C/M.
    Thank you for the information.
    Is C/M coming back or what? Should I use Anti Sieze on the threads. Or Mobil1 or nothing at all ?
    Again thanks,

    The Big Guy !

  6. #6
    Moderator bill81vette's Avatar
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    Default

    c4c5specialist is the C/M
    He is one of,if not THE best!!!!

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  7. #7
    Member LLC5's Avatar
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    98 black 6spd convert.

    Default

    Quote Originally Posted by TheBigGuy View Post
    What happened to Corvette Mechanic ? I came here because I could't get C/M.
    Thank you for the information.
    Is C/M coming back or what? Should I use Anti Sieze on the threads. Or Mobil1 or nothing at all ?
    Again thanks,

    The Big Guy !


    Use a drop of engine oil on the spark plug threads.
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  8. #8
    New Member
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    2001 Coupe

    Default

    What is the technical reason for using oil instead of anti-seize?

  9. #9
    Member LLC5's Avatar
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    98 black 6spd convert.

    Default

    Quote Originally Posted by Zzing View Post
    What is the technical reason for using oil instead of anti-seize?


    From my understanding, GM states that anti-seize can impeded the ground source to the electrode.
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