The 429 CJ/SCJ Paper Engine Tag

So we now know which Paper Tag Code goes with which 429 Mustang/Cougar application. What about the number in the lower left corner of the tag? This is the ignition timing for the engine and is 10 degrees for both the 429 CJ and SCJ engine. Regarding the “L” in the upper left hand corner – it is not known what this meant but we are assuming it is the same for the 429 tag since “L” is used for all other period Ford engine stickers.

If you would like to have one of these stickers for your 71 429 Mustang or Cougar, click on the Engine Tag Template link below and follow the instructions!

• Click the following link to open the Microsoft Word file: EngineLabelsMasterSheet.doc
• Save it to Microsoft Word.
• Print this Microsoft Word template out on a sheet of #8161 1″x4″ white address labels available at your local office supply store.
• Select the appropriate tag off the sheet for your application based on the Application Chart above.
• Trim the rounded corners off each end of the tag to make it rectangular.
• Use solvent to clean and degrease the front surface of your valve cover. Stick the tag on the front surface of the passenger side valve cover (in the same location as shown in the photos above of the original 429 stickers).
• Obtain a transparent sticker (I used shipping tape) and cut a rectangle that overlaps the perimeter of the paper sticker by about 1/8″. Overlay the clear sticker over the paper engine tag to protect it and produce a shiny covering like that used on the original Paper Engine Tag.