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**'68OrangeSunshine** · 06-03-2012, 04:42 AM

I used Champions for a long time with out problems, until 2005 when I noticed the new set I put on my just-rebuilt 292 were sucking badly. Turns out they were being made in Mexico. So I switched to AC Delco. No problems. I think I used RN17YC on V8s. AC # is R44TS. My L6 292 uses AC R44XLS.
I heard somewhere the shorter Accel Header plugs burn out early, but I haven't tried them myself.

06-03-2012, 04:42 AM	#9
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,042	Re: Spark plugs I used Champions for a long time with out problems, until 2005 when I noticed the new set I put on my just-rebuilt 292 were sucking badly. Turns out they were being made in Mexico. So I switched to AC Delco. No problems. I think I used RN17YC on V8s. AC # is R44TS. My L6 292 uses AC R44XLS. I heard somewhere the shorter Accel Header plugs burn out early, but I haven't tried them myself. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; 06-03-2012 at 04:49 AM.