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Best spark plugs

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Old Aug 29, 2023 | 05:50 PM
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Default Best spark plugs

I have a stock grand sport, C6, 2012 centennial edition with 80,000 miles wanting to know what’s the best spark plug to put in it for performance and running thank you for looking in your time what is the gap I should use on the plug as well
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Old Aug 29, 2023 | 06:09 PM
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Just get yourself some AC Delco Iridium’s…they are pre gapped.
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Old Aug 29, 2023 | 06:33 PM
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Yup ......
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Old Aug 30, 2023 | 10:49 PM
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AC Delco online parts catalog indicates your replacement plug is a part number 41-162. They are pre-gapped.

GD

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Old Aug 31, 2023 | 10:07 AM
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Yes OEM AC Delco and fine and are pre-gapped.
But, always good to check the gap before installing..... yet I do not know the gap without further research.

As for performance.... Index your plugs.

Enjoy with your install
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Old Sep 1, 2023 | 02:14 PM
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I believe the gap should be .040" (40 thousands)
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