Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#2
03-26-2016, 10:48 PM
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Re: ACR-43 Spark Plugs
I have a box with the same 5569992 and they are not marked on the box with Coralox Insulator. My AC Delco parts book is not handly at the moment but I believe that 5569992 is just their part number. You can read an old AC ad that explains with this marketing word means with regards to the insulator.
http://www.amazon.com/Coralox-Insula.../dp/B007V7SHAK
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Rick Nelson Musclecar Restoration and Design, Inc (retired) www.musclecarrestorationanddesign.com https://www.youtube.com/watch?v=62r-6vgk2_8 specialized in (only real) LS6 Chevelle restorations 
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