Thread: Spark plug issue after ported/milled heads?
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Old 05-13-2017, 09:20 PM   #3
07-SRT
 
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Drives: 2015 Camaro SS
Join Date: Sep 2011
Location: Jacksonville, Fl
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That plug is one step colder which is also used in boosted applications
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2015 Camaro 2SS
Cam/Heads/FBO 498/447 SAE
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