I have a 1981 Superwagon. It is a 3/4 ton and want to know what rear axle it has with what gearing. The axle code on the inside of the door is 46. It has no tag on the axle. If anyone knows this info or knows somewhere I can get it, please let me know.

 

Maybe this will help.
https://www.ford-trucks.com/article/...de_Chart_.html

This link can be found by starting at the FTE home page and browsing through the articles.

 

thanks for the chart, it was very useful

 

my '82 E350 also has axle code 46 on the door jamb sticker,
and the tag on the diff indicates it's a 3.73 (non-LSD) Dana 61.

never seen a decoder listing 46, but pretty sure any code
ending in 6 will be a 3.73 ratio...