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Differential tag; am I reading it wrong?

5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Differential tag; am I reading it wrong?

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Old 06-10-2013, 12:33 PM
  #1  
wgreenlee4
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Join Date: Jun 2011
Location: Michigan
Posts: 114
Default Differential tag; am I reading it wrong?

Hey guys so I'm doing a gear swap on my rear end and I wanted to know what sort of differential is already on it so I looked up the tag online but it's not making sense.

The car is a 92 mustang, but I know a lot is not original. I tested the gear before I took it out and I know it is a 3.27.

Tag: 3L27 88 9K04

According to the decoder:
3.27
Traction Lock
8.8
1979

But I read in a book that Traction Lock was first an option on the 1981 car, and that the 8.8 wasn't even put in mustangs until 1986.

Whaaat? Can anyone help?

This is what I used: http://www.foureyedpride.com/joom/in...d=24&Itemid=40
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Old 06-10-2013, 05:06 PM
  #2  
mongolchuck
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Join Date: Feb 2007
Location: IA
Posts: 258
Default

9 also corresponds with 1989. They didn't use letters to distinguish between decades on axle codes.
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