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platinum plugs in 408ci

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Old 04-19-2015, 05:43 AM
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I've got ngk lazer platinum plugs in my 408ci ls stroker with 11:1 compression..........are these plugs fine for this application or are they no good ?
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Old 04-19-2015, 08:53 AM
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Bump for help. NGK makes some nice plugs but never heard of those.......
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Old 04-19-2015, 02:45 PM
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These are the plugs
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Old 04-19-2015, 04:13 PM
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I imagine they are fine long as the heat range is correct. I am running NGK TR-55IX Iridiums in my car. 11.4:1
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