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Old 02-27-2008, 03:56 PM
Keith Tedford Keith Tedford is offline
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Default Re: L-78 Spark plug choice

I have a chart somewhere listing the AC spark plug coding. Off the top of my head, the "N" designates a long reach plug. "T" is for taper seat. "S" is for extended tip. There was other stuff as well. Any sparkplug problems that I ever had stemmed from carb problems, carbon tracked distributor caps, or bad plug wires.
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now.
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