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Generation III Internal Engine 1997-2006 LS1 | LS6
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spark plug gap

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Old 06-08-2009, 09:19 PM
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Default spark plug gap
Question:

I just purchased NGK TR55 / MSD Wires.. I'm wondering whats the best gap for these?? I'm pretty much stock.. couple bolt ons.. I was reading.. should i keep the stock .60 .. or should i drop it a bit to .50/.55??

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Old 06-09-2009, 10:52 AM
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i thought tr55s were gapped at .050? thats where i put mine.
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Old 06-09-2009, 11:18 AM
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I put mine at .050 as well.
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Old 06-09-2009, 02:27 PM
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A friend and I did .050 when we upgraded to TR55GP's in our rides. I can't remember where I read to gap them at .050. Probably on here somewhere.
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