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Best spark plugs?

Discussion in 'General Discussion' started by tahoe4life, Jan 24, 2010.

  1. tahoe4life

    tahoe4life Member

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    I'm curious as to what you guys on here are using for plugs? I have no mods, etc. just stock 5.3L but still curious if you guys have seen any increased performance from certain plugs and what are they?

    Thanks
    2000 LT Tahoe
     
  2. Chevyrider619

    Chevyrider619 Full Access Member

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    AC DELCO oem
     
  3. puckhead

    puckhead Full Access Member

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    Alot of us have the NGK plugs, I have the 55,s gaped to .04
     
  4. Chevyrider619

    Chevyrider619 Full Access Member

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    those NGK work for you?? I know they worked for my wife's old car,nissan sentra but for american car??? haven't tried them..
     
  5. puckhead

    puckhead Full Access Member

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    Yep, I think Max, Jenna, and JK still have em. Wouldnt say I noticed much of a difference but if your going with a full engine set up every bit helps
     
  6. Max

    Max Mile High

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    I gained a bit of top end power or maybe efficiency is the better term. Part # for the v-power plug is 2238 you can get them at any napa/advance/checker just be sure to gap them at .040.
     
  7. Eagle

    Eagle Thansk for all the help -STAFF! Supporting Member

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    NGK *makes* the AC Delco OEM plugs.
    :hands:
     
  8. tahoe4life

    tahoe4life Member

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    Why are these plugs gapped at .040? Manual says stock plugs gapped at .060? Is the variation due to brand?
     
  9. puckhead

    puckhead Full Access Member

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    GM redid their specs on them (cant remember to what) and then people figured out that .04 gives you a little more performance.
     
  10. TheFuzz

    TheFuzz Idiot Police Supporting Member

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    I run the Delco OEM Iridium plugs. Spendy, but worth it for the lack of maintenance, IMO...changing the plugs on these trucks is a royal PITA.
     

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