Help identifying jaguar IRS

[Pmccooey]

Id like to know the year/model Jaguar that my rear end came from. I need to know for ordering parts, brakes and possibly changing the rear center section to different gearing. Is there any source or guide for identifying these IRS rears?

Thanks!

[ERA174]

The following link is to a prior post that may be helpful.
Jaguar Diff identification.

[PDUB]

This is a link that has some info to help:


https://www.firstcoastcobraclub.com/....php?f=1&t=198


Good luck!

[Unique427]

Get under the car with a light and mirror.

You need to see the ID tags and casting stamps
found on the differential.

Metal ID tags will be attached to a carrier cover bolt.
The one pictured has the numbers 43 & 13.
43 denotes the ring gear teeth.
13 denotes teeth on pinion.
43/13 = 3.31 differential gear ratio.
46/13 = 3.54 differential gear ratio.

If you have 43/13 tag, a drain AND fill plug, there is a
strong possibility it's from a ('73-79) Series II XJ6

The year will be stamped into the casting such as
shown in the attached picture of a '74 XJ6.

Moss Motors has exploded views of the entire
Jaguar rear suspension. Click the number on the
diagram and it takes you to the corresponding part.

Here's a link to the Moss Motors XJ6 suspension diagrams to get you started.
https://mossmotors.com/jaguar-xj6-xj...48506e2e8e326f