AC stands for "Albert Champion"   but the family sold off that division of the business to GM/Delco who improved on the quality of the plugs is my understanding.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of [EMAIL PROTECTED]
Sent: Monday, February 04, 2002 8:27 PM
To: [EMAIL PROTECTED]
Subject: Re: [Chevelle-List] Champion platinum plugs

I always had problems with champions fouling plugs on small block chevys. Does anyone know what Ac stands for?
                                                                        Larry

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