This tread comes up about once a year. Based on experiences from the list the consensus seems to be that AC plugs are surrounded by a large low pressure system blowing in from the Pacific (they su*k), and Champions are somewhat better. Autolites seem to work well for many people. I used BOSCH for years in my 73 after I fought a stumble for MONTHS that turned out to be new AC plugs. Having said all that, obviously there are people who are successful with all brands or they would not be in business. Everyone has their preferences. KerryP Patch panels fabricated Pinkertonk@xxxxxxxxx dte.net/57imperial Imperials -- 50 Limo, 57 roadster, 61's, 64, 68 Convert, 73, a 66 300 and a bunch of lesser marques ----- Original Message ----- From: Roger Farrar <tenpalms@xxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Wednesday, March 05, 2003 5:29 PM Subject: Re: IML: spark plug advice > <<<<<<<<<<<<< > Christopher Hoffman wrote: > Replace all the plugs with > Autolites (#89, I think, is the correct model number) and never, ever, ever > use Champions in a Mopar again. > >>>>>>>>>>>> > > Bah humbug. If you're going to make sweeping statements like that, give us > some credible reasons. Does Champion > not make an appropriate heat range? Are the threads cut wrong? What? > For ANY given brand of spark plug (or > oil, or filters, etc) you will find someone to say to never use that brand, > always use this other brand. I don't have any particular ax to grind, the > majority of my cars and motorcycles are running NGK, but we do have > Champions in the '73, which starts > instantly and returns 18-19 mpg on the highway, with 89k on the odometer. > It's a moot point in this case, as the original poster clearly had a > carburetor > which was dumping fuel down one primary bore. > Cheers > Michael > > Roger and Michael in San Diego > 67 Crown Convertible "Moby" > 73 LeBaron Coupe "La Bomba Negra" > 56 Sedan > > >