Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
09-18-2018, 07:01 PM
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LS-5 or LS-6?
AC makes a great spark plug,just depends on your driving conditions for the car. Many brands make good comparable plugs too.I run NGK brand. 
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#2
09-18-2018, 07:20 PM
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----NGK's are good. I also like Autolite. When I raced that's all we used......Bill S
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