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

gear fitment

  • Thread starter Thread starter lxhatch91
  • Start date Start date Jul 28, 2018

lxhatch91

Member
Jul 28, 2018
60
1
8
quebec
Jul 28, 2018
#1
  • Jul 28, 2018
  • #1
hi guy can i fit a 3.73 gear 8.8 from 1985 to 1991 mustang
 

General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
28,115
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polk county florida
Jul 28, 2018
#2
  • Jul 28, 2018
  • #2
Yes.
 

mikestang63

SN Certified Technician
Aug 27, 2012
11,606
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In the garage
Jul 28, 2018
#3
  • Jul 28, 2018
  • #3
85 came with a 7.5 unless someone was in there and switched rear ends
 

lxhatch91

Member
Jul 28, 2018
60
1
8
quebec
Jul 28, 2018
#4
  • Jul 28, 2018
  • #4
when you look at the ring and pinion can you see the difference between a ring and pinion for 7.5. and ring and pinion for 8.8 i mean can i mesure it or physically someting are different. thanks
 

General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
28,115
10,733
213
polk county florida
Jul 28, 2018
#5
  • Jul 28, 2018
  • #5
Disregard the weird castings, look at the bolt pattern on these.

7.5


8.8

Don't know what brand these are but you get the idea.
Just a quick google search
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,353
18,092
224
Massachusetts
Jul 29, 2018
#6
  • Jul 29, 2018
  • #6
lxhatch91 said:
when you look at the ring and pinion can you see the difference between a ring and pinion for 7.5. and ring and pinion for 8.8 i mean can i mesure it or physically someting are different. thanks
Click to expand...

The ring gear for the 8.8 will measure 8.8 inches, while the ring gear for the 7.5 will measure 7.5" in diameter.
 

lxhatch91

Member
Jul 28, 2018
60
1
8
quebec
Aug 2, 2018
#7
  • Aug 2, 2018
  • #7
i have a stock differentiel on lx hatchback 1991. i think is a antislip diff. wath can i make to lock the diff without changing the heart off the diff. can i put some kind of oil or something because when i take off they dont lock all the time maybe one time on 5 take off
 

General karthief

wonder how much it would cost to ship you a pair
Mod Dude
Aug 25, 2016
28,115
10,733
213
polk county florida
Aug 2, 2018
#8
  • Aug 2, 2018
  • #8
Is there a sticker on the drivers side door jam? It will have your vin number and has codes for engine, body style and interior/exterior colors and axle codes
 

lxhatch91

Member
Jul 28, 2018
60
1
8
quebec
Aug 2, 2018
#9
  • Aug 2, 2018
  • #9
yes is a anti slip. but maybe the clutch in the differentiel is a bit wornout
 

CarMichael Angelo

my rearend will smell so minty fresh,
15 Year Member
Nov 29, 1999
10,641
8,909
234
Birmingham, al
Aug 2, 2018
#10
  • Aug 2, 2018
  • #10
lxhatch91 said:
i have a stock differentiel on lx hatchback 1991. i think is a antislip diff. wath can i make to lock the diff without changing the heart off the diff. can i put some kind of oil or something because when i take off they dont lock all the time maybe one time on 5 take off
Click to expand...
There is nothing you can add to a limited slip differential ( at this age) to make it lock both tires on a straight line launch with out rebuilding it.
Jack the rear in the air, and spin the tires with the car in neutral.
If it is truly a traction loc diff, and not completely worn out, both tires will spin in the same direction.
 

lxhatch91

Member
Jul 28, 2018
60
1
8
quebec
Aug 2, 2018
#11
  • Aug 2, 2018
  • #11
ok thank im gonna try. it
 
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