Thread: NGK vs. AC Delco spark plugs
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Old 05-14-2008, 05:57 AM
firez firez is offline
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Default Re: NGK vs. AC Delco spark plugs
i took my 68 Z out for the first time this spring with set of the NGK XK5s and the car ran perfect. Car seemed to rev up quicker with the NGKs.
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