• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

31 spline kit???

  • Thread starter Thread starter GTA_V6_Mustang
  • Start date Start date Feb 3, 2011

GTA_V6_Mustang

Active Member
Nov 29, 2004
1,326
3
39
Miami, FL
Feb 3, 2011
#1
  • Feb 3, 2011
  • #1
I was looking around on e-bay and ran across this
http://cgi.ebay.com/ebaymotors/NEW-...sories&fits=Model:Mustang&hash=item35ae62532d

Now my question is, would that work. I mean I guess it should right... The only difference is the spider gears that are splined for 31 spine so you should be able to sway out the 28 spline gears for 31 spline right? Just wondering, thought this was interesting and maybe could be an affordable alternative to anyone looking to beef up their rear end on a budget.
 

GTA_V6_Mustang

Active Member
Nov 29, 2004
1,326
3
39
Miami, FL
Feb 3, 2011
#2
  • Feb 3, 2011
  • #2
bump
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,366
18,112
224
Massachusetts
Feb 3, 2011
#3
  • Feb 3, 2011
  • #3
Interesting.

Tasca is right down the street from me too.
 

srtthis

the guy doing it does every local racers rear end
15 Year Member
Jul 3, 2009
5,129
1,666
204
Maryland
Feb 3, 2011
#4
  • Feb 3, 2011
  • #4
Are you trying to convert a 28 spline traclock to a 31?
 

GTA_V6_Mustang

Active Member
Nov 29, 2004
1,326
3
39
Miami, FL
Feb 3, 2011
#5
  • Feb 3, 2011
  • #5
Not trying to do anything really, Just curious if it was possible with a kit like this? Like I said before might be an interesting thing for people looking to upgrade their 28spline trac-lok to 31.
 

srtthis

the guy doing it does every local racers rear end
15 Year Member
Jul 3, 2009
5,129
1,666
204
Maryland
Feb 4, 2011
#6
  • Feb 4, 2011
  • #6
ive asked about it before and i dont think anyones actually tried it. mostly got the answer thats the 31 spline trac-lok housing was bigger then a 28 spline housing
 

cjrpony

Member
Jan 23, 2010
439
0
17
West Michigan
Feb 4, 2011
#7
  • Feb 4, 2011
  • #7
srtthis said:
ive asked about it before and i dont think anyones actually tried it. mostly got the answer thats the 31 spline trac-lok housing was bigger then a 28 spline housing
Click to expand...

I have heard the 31 spline housing is bigger also, but can't confirm. It would be cool if this would work, make it alot easier to upgrade axles.
 

srtthis

the guy doing it does every local racers rear end
15 Year Member
Jul 3, 2009
5,129
1,666
204
Maryland
Feb 4, 2011
#8
  • Feb 4, 2011
  • #8
cjrpony said:
I have heard the 31 spline housing is bigger also, but can't confirm. It would be cool if this would work, make it alot easier to upgrade axles.
Click to expand...

yes it would... wonder if auburn would sell me the **** to rebuild mine and throw 31's in it
 

GTA_V6_Mustang

Active Member
Nov 29, 2004
1,326
3
39
Miami, FL
Feb 4, 2011
#9
  • Feb 4, 2011
  • #9
Lol, since nobody has done it im curious and may bite the bullet and try, its only 80 bucks so wth
 

2000xp8

SN Certified Technician
Aug 8, 2003
8,071
1,655
194
NJ
Feb 4, 2011
#10
  • Feb 4, 2011
  • #10
I dunno, this seems like a spend less now, spend more later solution.
A 31 spline 03 cobra carbon rear complete is only like $250 new if you shop around.

And if the rear is out, it should get a rebuild and the clutch pack is like $100 alone, you would be like $200 in an experiment that only saves $50.

I wouldn't even consider it.
 

GTA_V6_Mustang

Active Member
Nov 29, 2004
1,326
3
39
Miami, FL
Feb 6, 2011
#11
  • Feb 6, 2011
  • #11
ok well I did some more research into it and it wont work. The spider gear cross shaft is bigger in a 31 spline diff so it wont fit a 28 spline housing.
 
You must log in or register to reply here.

Similar threads

J
2004 Mustang 3.8L V6 vibrations above 65 MPH and differential leaks
  • joeybuddy96
  • Mar 16, 2026
  • SN95 V6 Mustang Tech
Replies
17
Views
994
SN95 V6 Mustang Tech Aug 29, 2026
joeybuddy96
J
3
Eight inches is enough for me...
  • 351MooseStang
  • Nov 27, 2025
  • 1974 - 1978 Mustang II Talk & Tech
Replies
5
Views
773
1974 - 1978 Mustang II Talk & Tech Mar 2, 2026
Bullitt347
For Sale 3-owner 1987 Mustang GT, $18K obro, Lancaster CA
  • Bill Cool
  • Oct 6, 2024
  • Fox Body Mustangs For Sale (1979-93)
Replies
4
Views
2K
Fox Body Mustangs For Sale (1979-93) Oct 13, 2024
nickyb
SN Mustang Magnum T56 swap
  • revhead347
  • May 24, 2024
  • 1994 - 1995 Specific Tech
Replies
15
Views
7K
1994 - 1995 Specific Tech Jun 28, 2026
GearHeadGuy
S
For Sale Auburn Pro Series 8.8" limited-slip differential for 31-spline axle shafts (Ford Racing part # M-4204-P31) w/Richmond installation kit (83-1043-1)
  • spellman
  • Oct 27, 2021
  • Drivetrain Parts
Replies
0
Views
2K
Drivetrain Parts Oct 27, 2021
spellman
S
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?