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Topic: Mark VII rearend (Read 7777 times) previous topic - next topic

Mark VII rearend

Hello,

  I'm wanting to do a rear disc brake swap into my '87 cougar. I have located a TC rearend from a '88 auto with the 3:73's. However, I am also wanting to do a 5 lug swap. From what I understand the Mark VII rearend and the cougars are the same in length. Is this true? It should be a direct bolt in. What is everyone's thoughts?
Only in America do we use the word "politics" to describe the process so well: "POLI" in latin meaning "many", "TICS" meaning "bloodsucking creatures".

Mark VII rearend

Reply #1 –
It'll bolt directly on but the Mk VII rear is wider by an inch and a half (3/4" per side)

Mark VII rearend

Reply #2 –
Okay, now what your saying is the Cougar rearend is 1 1/2 wider than the mustangs and then you say the Mark VII is a 1 1/2 wider than the Cougars? I think i'm going to measure, because I have heard of the Mark VII rearend in mustangs.
Only in America do we use the word "politics" to describe the process so well: "POLI" in latin meaning "many", "TICS" meaning "bloodsucking creatures".

Mark VII rearend

Reply #3 –
NO the Mk7 rear end is 1" overall wider than the TBirds/Cougars....
Long live the 4-eyes!  - '83 Tbird Turbo - '85 Marquis LTS - '86 LTD Wagon-  '81 Granada GL 2dr

Mark VII rearend

Reply #4 –
Then how much wider is an '88 T-Bird rear over a Mustang rear?
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Mark VII rearend

Reply #5 –
Deja Vu anyone?
It's Gumby's fault.

Mark VII rearend

Reply #6 –
Quote from: Tbird232ci;137549
Deja Vu anyone?


Yes.....this is the 6th time I've read the exact same questions this week.....
Long live the 4-eyes!  - '83 Tbird Turbo - '85 Marquis LTS - '86 LTD Wagon-  '81 Granada GL 2dr

Mark VII rearend

Reply #7 –
O.K.,I measures the Stang rear,and it looks to be 3/4 of an inch narrower than the T-Bird rear.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Mark VII rearend

Reply #8 –
Quote from: vinnietbird;137559
O.K.,I measures the Stang rear,and it looks to be 3/4 of an inch narrower than the T-Bird rear.


What measurment?  Overall, or the housing only?

What Tbird rear?
Long live the 4-eyes!  - '83 Tbird Turbo - '85 Marquis LTS - '86 LTD Wagon-  '81 Granada GL 2dr

Mark VII rearend

Reply #9 –
From  to  on the axle shafts.The other rear (come to think of it) was from an '85 TC.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Mark VII rearend

Reply #10 –
The '88 may be a tad wider.I have one of those out in the garage as well that I'll measure.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

Mark VII rearend

Reply #11 –
Ok, that seems right. 

The  88 rear will have the same measurement from  to  on the axles as well....
Long live the 4-eyes!  - '83 Tbird Turbo - '85 Marquis LTS - '86 LTD Wagon-  '81 Granada GL 2dr

Mark VII rearend

Reply #12 –
Quote from: Chuck W;137536
NO the Mk7 rear end is 1" overall wider than the TBirds/Cougars....

Ooops. Sorry, my bad. I'm old and my brain sometimes slips into reverse. :hick:

Mark VII rearend

Reply #13 –
This is by far the single most confusing topic I have ever seen. Somebody should make some kind of graph or chart or something with what is what for every year of all Fox and brake style. Or at least Bird/Cougar, Mustang, and Mark
:birdsmily:   Objects In Mirror Appear to be Loosing  :birdsmily:

Mark VII rearend

Reply #14 –
There seems to be a difference of about (with my measuring) 1 3/4 inches between the Mustang rear and the '88 T-Bird rear.Now,how do I make up the difference when I install the Mustang rear into my '88 T-Bird?1/2 inch spacers and longer lug bolts?
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..