jaguar rear end - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 01-13-2008, 08:34 PM
Registered User
Join Date: Jan 2008
Location: san antonio tx
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
jaguar rear end

i just bought a 88 jaguar xj6 rear end. does any one know what size it is? does any one know what i will need to know about putting it under a 55 chevy truck? i am also looking the the specs of it

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 01-14-2008, 08:04 AM
XNTRCI-T's Avatar
AKA Lee in KC
Last photo:
Join Date: Apr 2006
Location: Overland Park, KS
Age: 68
Posts: 530
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
I know a little about Jag IRSs. I put one under my T-bucket after doing quite a bit of research. If you google "jag irs" you'll get quite a few hits, many are on kit Cobra forums, as the Jag is very popular with the Cobra guys.

The XJ rearends are about 61" wide over the hubs. There should be a little metal tag held on by one of the differential cover bolts that has two numbers on it. The lower number is the number of teeth on the pinion gear. The higher number is the number of teeth on the ring gear. Divide the higher number by the lower number and you get your ratio, which is most likely 3.31, although there are some 3.54s out there. The differential is based on the Dana 44 ring, pinion and carrier, however the bearings are metric. The cover is standard Dana 44.

Setting up the IRS in your frame is not terribly difficult, but you need to pay close attention to the geometry and alignment. Assuming you aren't going to use the stock cage, you are going to need to fabricate a mount for the differential, keeping the pinion angle in mind. You will also need to fabricate upper shock mounts, front stabilizer struts and mounts, and radius rods and mounts. You'll also need front and rear tie-bars and a bottom plate to tie the lower control arm mounts together for strength. Your forward radius rod mounts should be in line with the inboard hinge axis of the lower control arms to prevent binding as the control arms move up and down in normal suspension travel.

Attached are some CAD drawings of my Jag set-up (done by the guy who fabbed my mounts).
Attached Thumbnails
Click image for larger version

Name:	Assembly4.jpg
Views:	1544
Size:	57.0 KB
ID:	27025   Click image for larger version

Name:	Assembly5.jpg
Views:	1155
Size:	57.2 KB
ID:	27026  
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
this is a saver.... GM build codes TooMany2count General Rodding Tech 24 11-23-2009 09:36 AM
Rear End - what to do?? 73Caprice Transmission - Rearend 2 01-04-2008 09:28 AM
Thump Thump in rear end?? HotRodMan Suspension - Brakes - Steering 7 01-24-2007 06:09 PM
S-10/Camaro Rear End slaveforthewave Transmission - Rearend 7 02-20-2006 01:44 PM
10 bolt rear end. TORI1 Transmission - Rearend 1 01-04-2006 10:37 PM

All times are GMT -6. The time now is 09:22 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.