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#7
05-13-2008, 01:51 PM
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Re: NGK vs. AC Delco spark plugs
The pics you posted show two different types of plugs, one is a projected nose, the other is not. If you don't want a projected nose, and can't find a NGK "normal" cross reference, go to a racing plug if you can find the right heat range. I use a cold NGK racing plug in my L78, and they work fine. They are a .460 reach.
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Dean 
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