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spark plugs for LS3

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Old Jan 14, 2021 | 04:40 PM
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Default spark plugs for LS3

My Tuner put NGK TR55 spark plugs in my 2011 G.S. (6.2L / 6 spd ./ chipped / headers + air induction thru scoop/ 430 RWHP). What plugs seem best in this street 6.2L LS3?
thank you

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Old Jan 14, 2021 | 05:06 PM
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Originally Posted by Tahoe
My Tuner put NGK TR55 spark plugs in my 2011 G.S. (6.2L / 6 spd ./ chipped / headers + air induction thru scoop/ 430 RWHP). What plugs seem best in this street 6.2L LS3?
thank you
If your tuner told you your car is chipped. You need to get another tuner. Unless you meant the paint.
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Old Jan 14, 2021 | 05:26 PM
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ECM mod. made.
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Old Jan 14, 2021 | 06:32 PM
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The factory plugs are very hard to beat.
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Old Jan 14, 2021 | 07:08 PM
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I love the NGK coppers. TR6, TR55 are my two top choices. TR6 if you start pinging after it heats up, TR55 if it doesnt. I run TR6 with similar mods but YMMV
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Old Jan 14, 2021 | 08:03 PM
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If you feel the burning need to run something different, there are a lot of options. If you want to put in a set of plugs that have been proven reliable and long lasting for jillions of miles, put the plugs in that the general recommends. I've had problems with NGK plugs. I'll never use them again. The only thing they have going for them is that they're cheap. Spending a few extra bucks to avoid possible problems seems like the right play to me. But, I do understand the burning need to run something different though. If you do need a 6 heat range plug, the ZR1/ZO6 plug fits that bill. I believe it's an AC Delco 41-104. Equivalent heat range to a TR6.
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Old Jan 14, 2021 | 08:29 PM
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Hi OMH.......running NGK Iridium in my 2000 / 5 spd/Maxima.....superb experience.
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