NGK vs. AC Delco spark plugs - The Supercar Registry

05-14-2008, 05:47 AM

70 Forest Green Zee 70 Forest Green Zee is offline

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Re: NGK vs. AC Delco spark plugs

Update to this whole story...I put in the NGK XR5's and they run great...after Marlin's post I wasn't too worried because he has the same engine in his Deuce as I have in my 70 Z28. Bottom line, so far from how the car runs with the NGK's, I like um!

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