Thread: Best spark plugs to use on cammed camaro
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Old 01-27-2017, 03:19 PM   #25
davidscamaro

 
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Drives: 2010 SS/RS M6 BIG cam
Join Date: Mar 2016
Location: McDonald's DT
Posts: 857
ZR1/ls9 plug is ac delco and 6 heat range with 100000mile life
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