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Y-Blockhead · 12-02-2020, 05:52 PM

A while back I was giving a Model A engine that had Wards "Supreme Quality" spark plugs in it.

They are take-a-part design similar to Champion 3X plugs. Does anyone know how they compare to 3X plugs, heat range wise? They are #8s.

After cleaning them, I installed them in my engine and was impresses how good it ran. I put the 3X plugs back in because I don't know how hot the Wards are.

12-02-2020, 05:52 PM	#1
Y-Blockhead Senior Member Join Date: Jul 2011 Location: Redondo Beach, CA Posts: 5,849	Wards Spark Plugs. A while back I was giving a Model A engine that had Wards "Supreme Quality" spark plugs in it. They are take-a-part design similar to Champion 3X plugs. Does anyone know how they compare to 3X plugs, heat range wise? They are #8s. After cleaning them, I installed them in my engine and was impresses how good it ran. I put the 3X plugs back in because I don't know how hot the Wards are.