• Hi Guest!
    If you appreciate British Car Forum and our 25 years of supporting British car enthusiasts with technical and anicdotal information, collected from our thousands of great members, please support us with a low-cost subscription. You can become a supporting member for less than the dues of most car clubs.
    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

Wedge rear end ratio swap?

Share this page

tr7andtvr

tr7andtvr

Jedi Hopeful
Offline
Any idea if the rear end ratios can be swapped without just replacing the entire unit? I am making to much bhp for the 3.07… This might even be a question for the Jag guys.
 
Yes they can, but you will be building a diff, with all the work that entails. It is fairly easy to source other ratios from Jags. XJS V12 pre 92 has 2.88 powerlock. V12 and 6 bangers have 3.54s, V12 and some sixes with powerlock.Series 1 and 2 XJ6s have either a 3.07 or a 3.31. XJ12s have the same offerings but with powerlock. Anything older than thatwill be an earlier diff style. The brakes will not adapt easily. (the early cars had dunlop calipers)
 
Back
Top