Help ID Rear End

[junkin]

The inside passenger side axle tube: 6TP G 178
Axle tube OD: 2.5"
Cover: 10 Bolts, app. 3" apart
Wheels studs: metric
Outside drum to outside drum: 58"
Ring gear: looks about 8.25"
It does have limited slip unit with the tag.

 

[turbofish38]

6TP is the code you are looking at. I see that one is not on my list. The first digit doesn't matter much. You have a 3.42 Posi. Any code ending with a TP is the 3.42 posi.:smile:

 

[junkin]

Can you tell what year by the axle code and is the 2.5 axle tube correct for a 8.5 gear?