Spark plugs for ls3?

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09-03-2020, 10:52 AM

Elcodude85

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Spark plugs for ls3?

What is everyone running for plugs for a boosted ls3? Right now I have a 5.3 that’s boosted and Running NGK BR7EF plugs now and was wondering if they would work for my 6.2? Thanks in advance👍

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09-04-2020, 06:36 PM

old motorhead

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If you're over 700 wheel on an M6 LS3, run the 7 heat range. Under that, run the 6.

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09-04-2020, 09:14 PM

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TR55’s or TR6, gapped .040

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