Spark plugs for NA 823 heads

04-06-2019, 01:16 PM

Staging Lane

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Spark plugs for NA 823 heads

What is a good spark plug number for an NA cammed ly6? Ngk work better than AC Delco? Thanks

04-08-2019, 02:22 PM

ModSquad

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I like NGK...

04-08-2019, 03:19 PM

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NGK TR55s or TR6s.