John Posted June 20, 2002 Share Posted June 20, 2002 I have 2 boxes of Atlas spark plugs, their number 461 (complete number is 658461). I would like to know the corresponding AC or Champion plug number. Anybody have an old Atlas catalog or a crossover listing??<BR>Thanks! Link to comment Share on other sites More sharing options...
Guest Posted June 20, 2002 Share Posted June 20, 2002 anyone with an an old AC or champion or even AL book should be able to cross them too. ESPECIALY with an AC book. Link to comment Share on other sites More sharing options...
Guest stude8 Posted July 3, 2002 Share Posted July 3, 2002 I have an older AC catalog that crosses the Atlas 658461 t0 AC44S/45S. They are 14mm, 3/8" reach, extended gap, 13/16hex.<BR>They also cross to Champion J-12Y/13Y/14Y which is not very accurate because those numbers are all different heat ranges??<BR>J-12Y is a common 1960's plug for Studebaker V8 and Chrysler also. Stude8 Link to comment Share on other sites More sharing options...
John Posted July 3, 2002 Author Share Posted July 3, 2002 Thanks Stude8! My Buicks call for AC44S, so these should do OK.<BR>John Link to comment Share on other sites More sharing options...
Dynaflash8 Posted July 3, 2002 Share Posted July 3, 2002 J-14Y was the recommended plug for my 1955 Ford 272 Special back in 1959. Link to comment Share on other sites More sharing options...
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