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Spark plug heat range for spray

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Old Sep 16, 2015 | 11:41 AM
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nskyline34
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Default Spark plug heat range for spray
Have a 2003 Z06, stock motor with exhaust and intake for now. Just a 100hp dry shot. Going to pull 4* timing out and want to go to a colder plug. What is one step colder on these cars or what do you guys recommend/use?
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Old Sep 16, 2015 | 01:44 PM
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Originally Posted by nskyline34
Have a 2003 Z06, stock motor with exhaust and intake for now. Just a 100hp dry shot. Going to pull 4* timing out and want to go to a colder plug. What is one step colder on these cars or what do you guys recommend/use?

I just got my NX plate kit today. I am going to run NGK BR7EF plugs. Our set ups are simular at thie time.
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Old Sep 16, 2015 | 11:51 PM
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St. Jude Donor '13-'14-'15
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NGK TR6 is one heat range colder than the stock NGK TR55
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Old Sep 17, 2015 | 12:17 AM
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Thank you good sir.

I'm thinking this the correct way right? One range colder for a little spray?
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