Thread: Spark Plugs in Shelby Aluminum FE block
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Old 05-10-2016, 09:33 AM
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Al G Al G is offline
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Cobra Make, Engine: Sold - Shelby Cobra CSX6045, 468 ci all aluminum Shelby engine
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My drivetrain installer recommended NGK R5671A-7 or -8. I'm using -7 and have been fine. My engine is 468 ci.
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