Dodge1934 Posted April 1, 2017 Share Posted April 1, 2017 In the early days of cars Champion spark plugs were OEM for Ford products and many closely related makes. AC was the OEM for GM and many other makes not tied to Ford. As time went by I believe Autolite spark plugs became OEM for many cars. Chrysler products for sure by the 50`s Does anybody have any better information of when different manufacturers moved away fro AC and Champion as OEM? Thanks for any help Link to comment Share on other sites More sharing options...
Spinneyhill Posted April 1, 2017 Share Posted April 1, 2017 I have a page from a National Data Manual I found on the www. In 1932 and 1933, AC and Champion were the only OEM plugs. Ignition-Battery-RingGr32-33.pdf Link to comment Share on other sites More sharing options...
Dodge1934 Posted April 1, 2017 Author Share Posted April 1, 2017 59 minutes ago, Spinneyhill said: I have a page from a National Data Manual I found on the www. In 1932 and 1933, AC and Champion were the only OEM plugs. Ignition-Battery-RingGr32-33.pdf Thanks for that list ... I don`t have it... I do have a list from 1942 that was put out by AC so that is some help as well.. I would appreciate if anybody has soemthing similar fro the late 40s or 50s Thanks again Link to comment Share on other sites More sharing options...
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