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mcf3778
mcf3778 asked in Cars & TransportationMaintenance & Repairs · 1 decade ago

stock brand spark plugs?

I have a 1997 Lumina 3.1L VIN M "car" and I am changing the spark plugs and would like to know what brand and plugs did GM install from the factory so I could get an idea if they were ever changed before... the right bank is hard to get to and requires spinning the engine "I will replace them in the next few days" and I do not think they were ever changed... the left bank only took me 10 minutes to swap and I pulled "autolite 606" I would think GM installed something like ac delco plugs.

5 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    Your correct, Ac Delco

    Source(s): Auto Tech
  • chevyraceman_383
    Lv 7
    1 decade ago

    Yes GM uses AC Delco spark plugs. So it does sound like they have been changed before.

    Autolite is a good plug as well. The only 3 brand plugs I run in everything I own or build for street or race is AC Delco, Autolite or NGK

  • oscar
    1 decade ago

    Ac delco. Sounds like a fun job.

  • PAUL P
    Lv 6
    1 decade ago

    Hi

    GM uses AC.

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  • Anonymous
    1 decade ago

    You will need a set of 41-940 gap them at 0.060 inch.

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