Diff Change - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 05-01-04, 04:57 PM Thread Starter
Registered User
Join Date: Jan 2004
Location: Geelong, Vic, Australia
Age: 32
Posts: 63
Diff Change

I have a XD Fairmont wich has a borg warner l.s.d and 2.77:1 gears it used to have a 302 but it wore out so i built up a mild 351 and i want to change my diff ratio to a 3.23 or 3.45 but i rang all the wreckers and thay said that there is no V8 diff with that type of ratio, but there has to be because people are alwayes talking about them. can some one please help?

tuffxd is offline  
Sponsored Links
post #2 of 5 (permalink) Old 05-01-04, 08:07 PM
74 XB Fairmont
brenx's Avatar
Join Date: Sep 2001
Location: Cranbourne, Vic
Posts: 5,113
Re: Diff Change

Most people with higher hp engines use Ford 9" diffs. They have a vast amount of ratios to choose from.

What you have is a borg warner 8 3/4 diff. Finding gears to suit especially LSD is not an easy task. There has been various threads here on it. You can do a search for them.

BW open wheel diffs had 2.77/2.92/3.23/3.54 from memory and off the top of my head.

BW LSD has 2.77/2.92 from memory.


XB Fairmont (street car) 11.07@123.02mph.
brenx is offline  
post #3 of 5 (permalink) Old 05-01-04, 11:40 PM
socially irresponsible
JG33PY's Avatar
Join Date: Jun 2002
Location: moranbah
Posts: 1,194
Re: Diff Change

just go to a wrecker and get the whole assmbly from a ute or p/v, put your brakes on it and away you go. if the lsd is really important to you then you'll have to change the pinion and crown gears. late model xr's had 3:23 as well.
JG33PY is offline  
post #4 of 5 (permalink) Old 05-02-04, 01:57 AM
4.1 XFLOW EFi Turbo
xf6250's Avatar
Join Date: Oct 2002
Location: South East Melbourne, Victoria
Posts: 1,087
Re: Diff Change

i know a lot of ppl actually get the lsd out of a ef/el and use the axles also, as the ef/el had 28 spline were the xd-e-f had 25 spline axles

Same car............new lease on life
500+HP of 250 EFI Turbo............Coming Soon
xf6250 is offline  
post #5 of 5 (permalink) Old 05-03-04, 09:49 PM
blueovalxfboy's Avatar
Join Date: Oct 2003
Location: Victoria
Age: 30
Posts: 974
Re: Diff Change

i would say use a EF/L 3.45 LSD but i dont no how to addapt the hand brake cable to fit
blueovalxfboy is offline  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Trans | Driveline

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
diff gears qwikcorty Trans | Driveline 85 05-05-05 07:33 AM
diff leak and backlash BlackXR Australian Falcons 2 01-20-04 12:54 AM
Change diff gearing? s_pak Trans | Driveline 7 11-06-03 07:11 PM
ef II fairmont ghia diff yldsix Trans | Driveline 11 06-24-02 07:56 PM

Posting Rules  
You may not post new threads
You may not 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

For the best viewing experience please update your browser to Google Chrome