Diff id

[Jayro]

Hey guys, just curious more than no anything else. Does this tag identify my diff in some way? Was attached to one of the bolts on the housing

Cheers
Jase

 

[turtle5353]

I can’t remember what all the letters stand for but you have 2.79 gears.

 

[Sheriff41]

Like Kevin said, you have a 2.79:1 gear ratio with an open differential, i.e., one-tire fryer. What gear ratio are you installing with your trutrac?

 

[Jayro]

Just fitting the trutrac to the current diff mate,

 

[basstrix]

8", open diff, and as others have said, 2.79 ratio. This link has several pages of tag ID's. You should be able to find what all of the info means. https://www.fordification.com/tech/rearends_ford02.htm

 

[secluff]

The differential tag layout has changed over the years. The tag in your illustration Ford used from '69-73 on the first-generation Mustang.
The "WCZ-V" is the axle model.
"2MC" is the year, month, and week of manufacture. 2=1972 M=December C=third week.
As already posted, the ring gear and pinion ratio are on the second line. It would read 2L79 if a Traction Lok differential.
The next single digit is the ring gear diameter. In your case, 8".
The last set of numbers/letters is the axle assembly plant code.