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spark plug gap?

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Old 10-08-2007, 01:31 AM
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Default spark plug gap?
whats best gap on plugs for the 04 gto? ls1 duhh
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Old 10-08-2007, 08:58 AM
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Just use what the factory manuel says (I think .060)
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Old 10-08-2007, 09:50 AM
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+1 a lot of folks are claiming .040 but the actual spec is a big .060
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Old 10-09-2007, 11:26 AM
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.060, only reason to go less is if you run boost or nitrous.
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Old 10-09-2007, 11:18 PM
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It is not a bad idea to set it alittle narrow when you gap them because they tend to spread out after awhile. Don't set it too narrow or your spark will be small and weak to ignite the charge.
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Old 10-09-2007, 11:50 PM
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I set mine at .050. NGK TR55 the regular ones.
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