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

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Old Jun 3, 2007 | 11:00 PM
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dansean1
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Default spark plug gap
Im about to do plug and wire change on my 02 LS1. On the NGK TR55, what should the gapping be?
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Old Jun 4, 2007 | 11:33 AM
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Stock internals? .055 or .060
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Old Jun 4, 2007 | 06:53 PM
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NGK's website shows .044 for the TR55s and LS1, yet I've seen .055 all over the forums. Why the descrepency?
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Old Jun 4, 2007 | 09:25 PM
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Its stock internals.
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Old Jun 4, 2007 | 10:56 PM
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My Haynes manual says .060. I just changed the plugs, but didn't start the car yet because I'm doing other stuff. The plugs that I pulled out were gapped to .060.
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