Vintage AC Spark Plugs

Joe Strunk · 09-19-2023, 02:13 PM

I am looking for some help form GM guys with some AC Spark Plugs I have.

My Uncle past away and left an inventory of old vintage spark plugs from most likely the 70's. Most are Ford Autolite variety but some are AC green stripe

Fire Ring 44
Fire Ring 44S
Fire Ring 45
Fire Ring 46N

This is what I have, any info on what they would be used with and are they at all desirable for use by todays standards?

Most info I have found, these were discontinued years ago.

Thanx in advance!

09-19-2023, 02:13 PM	#1
Joe Strunk Junior Member Join Date: Nov 2010 Location: Tampa, Fl Posts: 37 Likes: 0 Liked 5 Times in 3 Posts	Vintage AC Spark Plugs I am looking for some help form GM guys with some AC Spark Plugs I have. My Uncle past away and left an inventory of old vintage spark plugs from most likely the 70's. Most are Ford Autolite variety but some are AC green stripe Fire Ring 44 Fire Ring 44S Fire Ring 45 Fire Ring 46N This is what I have, any info on what they would be used with and are they at all desirable for use by todays standards? Most info I have found, these were discontinued years ago. Thanx in advance! __________________ [SIGPIC][/SIGPIC] SS/MA 2890 Anderson & Toren Comet