What Spark Plugs Should I Run?

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10-24-2011, 10:32 PM

oakley6575

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What Spark Plugs Should I Run?

LQ4 408ci
LS3 Heads and Intake
11.4 compression

Any thoughts on what spark plugs I should be running?

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10-24-2011, 11:22 PM

Nowhereman

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I am partial to Denso Iridiums.
They are pricey but, you notice the difference and they last n last.

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10-25-2011, 01:19 AM

99Bluz28

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NGK TR6 (copper V-power), or TR6-IX (Iridium)and the utra long life ITR6F-13 (Iridium w/platinum tipped ground electrode)
All are heat range 6, which is one step cooler than stock.

Last edited by 99Bluz28; 10-25-2011 at 01:39 AM.

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