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What Spark Plugs Should I Run?

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Old 10-24-2011 | 11:32 PM
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oakley6575's Avatar
oakley6575
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Default 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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Old 10-25-2011 | 12:22 AM
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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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Old 10-25-2011 | 02:19 AM
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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 02:39 AM.
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