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Spark plugs for 402?

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Old 05-20-2006, 10:09 PM
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Default Spark plugs for 402?

I just got an LS2 402, and am in the process of installing it. A lot of people recommend NGK TR55 for naturally aspirated heads and cam cars, is that still a good plug to use for a 402? And what should I gap them to?

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Old 05-22-2006, 03:59 PM
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I bought TR55s, and I guess I'll gap them to 0.050", which I believe is what the stock plugs are gapped to in an LS1.




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