Best spark plugs?

tahoe4life

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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
 

puckhead

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

Chevyrider619

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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..
 

puckhead

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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
 

Max

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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.
 

tahoe4life

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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.


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

puckhead

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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.
 

TheFuzz

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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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