• Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Help me ID this 9" housing and maybe talk me out of it.

  • Thread starter Thread starter reenmachine
  • Start date Start date Jan 23, 2008

reenmachine

20+ Year Stangneter
Jun 27, 2004
1,258
2
38
Montrose, CA
Jan 23, 2008
#1
  • Jan 23, 2008
  • #1
This 9" housing came with a '68 Mustang I bought. It's not original to the car and I have no info on where it came from.

I was planning on using it in the '68 Bullitt I'm building but a few things about it bother me. Perhaps you all can set my mind at ease.

I'll list what I know -- let me know what you think.

1) The overall width is 54-3/8". I was expecting 54" flat. It's about 53-13/16 between the insides of the flanges.

2) The tubes are 3" where they meet the center, then about halfway out taper to ~2.8"

3) The bearings are small Ford size (2.835" diameter, 2" x 3.375" bolt pattern).

4) It has the hump on the back and two dimples.

5) The spring perches measure 2-1/2" wide and 43" center-to-center.

6) I was getting ready to weld on the brackets for the TCP g-Bar rear suspension and was measuring to see if the pinion is centered or has the 1" offset and it's neither way. The pinion centerline is offset about 1/4" towards the passenger's side.

Here are some pics:





 

Attachments

  • 9housing1.webp
    26.6 KB · Views: 155
  • 9housing2.webp
    23.3 KB · Views: 152
  • 9housing3.webp
    31.1 KB · Views: 147
1

10secgoal

Active Member
Dec 1, 2003
2,801
3
49
San Diego
Jan 23, 2008
#2
  • Jan 23, 2008
  • #2
How much HP with this car ? I would sell it to some looking for a direct fit for that body width. Only I say that because the sealing surface on those tend to leak when you give them a beating with a good amount of HP. 8in are horrible for that. But aftermarket are much better, and you can get with a big bearing.
 

reenmachine

20+ Year Stangneter
Jun 27, 2004
1,258
2
38
Montrose, CA
Jan 23, 2008
#3
  • Jan 23, 2008
  • #3
10secgoal said:
How much HP with this car ? I would sell it to some looking for a direct fit for that body width. Only I say that because the sealing surface on those tend to leak when you give them a beating with a good amount of HP. 8in are horrible for that. But aftermarket are much better, and you can get with a big bearing.
Click to expand...
About 400 hp and the car won't see hard abuse, and will most likely always be on street tires (as opposed to drag radials or slicks).

What are your thoughts about using a small bearing housing in the first place? I wasn't really worried about it in this application.

My alternative is to just get a TCP FAB9 with all of the g-Bar brackets pre-welded. In that case I'd go big Ford for the bearings, but I'd like to use this housing if it's good.
 
C

chromedog

New Member
Jan 13, 2006
554
0
0
worlds center for speed
Jan 23, 2008
#4
  • Jan 23, 2008
  • #4
sorry, i spaced the part about the 68 model year... it sure looks like my 59 housing, though.
 

73vertstang

New Member
Nov 21, 2007
56
0
0
Mt Airy Maryland
Jan 23, 2008
#5
  • Jan 23, 2008
  • #5
Reen,

Check out this web site:

http://www.wsu.edu:8080/~i6735189/rearaxle.htm

I don't know how, but the pictures your showing look like a 9" rear
out of a 76 Bronco.
 

ultrastang

Founding Member
Feb 26, 2002
1,092
2
37
Arkansas
Jan 23, 2008
#6
  • Jan 23, 2008
  • #6
Definitely not from a '57-'59 Ford big car. The ring gear bulge on the back of the housing didn't appear on the 9-inch rears until the mid-'60s.

1960 T-Bird 9-inch housing on top, '80 Monarch 9-inch rear on bottom:
http://img88.imageshack.us/img88/1989/9inchhousings002do6.jpg

By what you describe, and from your photos, it looks very similar to the Ford 9-inch rear I have: --'80 Monarch drum brake small bearing housing:
http://img88.imageshack.us/img88/2334/monarch9inchncase002jr8.jpg

'79 Versailles disc brake housing on top, '80 Monarch drum brake housing on bottom:
http://img88.imageshack.us/img88/4913/monarch9inchandversaillag8.jpg

From '75-'80, there were (4) rear ends available in the Granadas/Monarchs:
1. 8" drum brake rear.

2. 8.7" integral-type drum brake rear.

3. 9-inch drum brake rear (small axle bearing).

4. 9-inch disc brake rear (large axle bearing) --same rear end that was standard equipment in the '77-'80 Lincoln Versailles.
 
I

iapexl8r

Member
Apr 1, 2005
254
0
17
Jan 23, 2008
#7
  • Jan 23, 2008
  • #7
Definatly looks like the granada. Will it handle 400 hp hell yea!!!! Ive got the same rearend in my 408 ci 65 vert making 405rwhp no issues with the rearend. I say use it!!!
 
9

96 DOHC Cobra

Founding Member
Oct 14, 2001
542
0
16
Cerritos, CA
Jan 24, 2008
#8
  • Jan 24, 2008
  • #8
It's not a 57-59 housing. Those didn't get the hump in the back. It's also definitely not a Granada housing. Those had the bigger tubes and more taper on the center area. It looks to me like a stock 68-70 9" Mustnag housing (67 would be the same except it would have the large fill plug on the back side).
 

Rusty67

20+ Year Stangneter
Dec 3, 2002
3,749
37
109
LA, CA
Jan 24, 2008
#9
  • Jan 24, 2008
  • #9
I was under the impression that the center section of the classic Mustangs was not offset at all ?
 

67coupestang

Founding Member
May 31, 2002
509
2
19
Jan 24, 2008
#10
  • Jan 24, 2008
  • #10
73vertstang said:
Reen,

Check out this web site:

http://www.wsu.edu:8080/~i6735189/rearaxle.htm

I don't know how, but the pictures your showing look like a 9" rear
out of a 76 Bronco.
Click to expand...

i thought that too for a minute, but it looks like Reen's axle is sprung under.
 
1

10secgoal

Active Member
Dec 1, 2003
2,801
3
49
San Diego
Jan 24, 2008
#11
  • Jan 24, 2008
  • #11
reenmachine said:
About 400 hp and the car won't see hard abuse, and will most likely always be on street tires (as opposed to drag radials or slicks).

What are your thoughts about using a small bearing housing in the first place? I wasn't really worried about it in this application.

My alternative is to just get a TCP FAB9 with all of the g-Bar brackets pre-welded. In that case I'd go big Ford for the bearings, but I'd like to use this housing if it's good.
Click to expand...
Then it wouldn't be that big of a deal then. With good axles 28 spline can take a lot of abuse, especially if it has radials.
 

reenmachine

20+ Year Stangneter
Jun 27, 2004
1,258
2
38
Montrose, CA
Jan 24, 2008
#12
  • Jan 24, 2008
  • #12
10secgoal said:
Then it wouldn't be that big of a deal then. With good axles 28 spline can take a lot of abuse, especially if it has radials.
Click to expand...
I'm still going to put 31-spline axles in it, just with small bearings.
 
1

10secgoal

Active Member
Dec 1, 2003
2,801
3
49
San Diego
Jan 24, 2008
#13
  • Jan 24, 2008
  • #13
reenmachine said:
I'm still going to put 31-spline axles in it, just with small bearings.
Click to expand...
There used to be a company that made that bearing...but stopped. Did you find one that makes it ?
 

Edbert

Founding Member
Jul 13, 2002
3,548
32
109
Austin TX
Jan 24, 2008
#14
  • Jan 24, 2008
  • #14
I bought a set of "small" bearings for 31 spline axles at the local parts place. Brand was Timken.

I think that 96DOHC is right, that housing looks just like the 9 I pulled from a '68 428 Cougar.

Here's a link with pics of it and the 31 spline small-bearing axles (from Superior)....
http://www.edbert.net/axle.htm
 

reenmachine

20+ Year Stangneter
Jun 27, 2004
1,258
2
38
Montrose, CA
Jan 24, 2008
#15
  • Jan 24, 2008
  • #15
10secgoal said:
There used to be a company that made that bearing...but stopped. Did you find one that makes it ?
Click to expand...
I'm going to use Strange Engineering axles and they make 'em in 31-spline with the small bearing.
 
B

bnickel

Founding Member
Aug 21, 2002
5,640
3
77
lubbock, texas
Jan 25, 2008
#16
  • Jan 25, 2008
  • #16
http://www.mustangsandmore.com/ubb/FordRearDimensions.html

according to this it looks like you have a normal 67-73 mustang/cougar rear. one thing about the cougar rear is that the centering pin pilot hole in the leaf spring perch is larger than a mustang version and to my knowledge they are just a tad bit wider housing than a mustang....less than 1/2".

i would find a regular mustang leaf spring centering pin and see if it fits the pilot hole on the spring perch, if it does then you have a mustang rear most likely, if it's a little loose then you probably have a cougar housing.

also, if the rearend came with some big funky looking rubber isolators that mount between the rearend and the leaf spring you probably have a cougar rear, that doesn't necessarily mean that whoever pulled the rearend actualy took the isolators too though.

and one more thing i remember about the cougar housing is that the leaf springs are wider than the mustangs and IIRC the spring perch on the housing is a little wider as well, but don't quote me on that one
 

valley firearms

New Member
Sep 1, 2005
63
0
0
Jan 26, 2008
#17
  • Jan 26, 2008
  • #17
This may be of some help

http://www.ultrastang.com/Rearinfo.asp?Page_ID=1
 
9

96 DOHC Cobra

Founding Member
Oct 14, 2001
542
0
16
Cerritos, CA
Jan 26, 2008
#18
  • Jan 26, 2008
  • #18
The housing is exactly what you need for a mild 68 Mustang. If you're considering upgrades to the rear (31 spline axles, disc brakes) I'd go with a HD housing with "Torino style" ends. That way you can get big bearing 31 spline axles and easily mount the Explorer rear discs, if that's something you were considering.
 
You must log in or register to reply here.

Similar threads

3
Eight inches is enough for me...
  • 351MooseStang
  • Nov 27, 2025
  • 1974 - 1978 Mustang II Talk & Tech
Replies
5
Views
606
1974 - 1978 Mustang II Talk & Tech Mar 2, 2026
Bullitt347
J
For Sale MASTER LISTING: Abandoned '66 Mustang Restomod Part-Out (Wilwood, Ididit, Quick Performance, Mishimoto)
  • JasonB66
  • Jul 23, 2026
  • Suspension
Replies
0
Views
104
Suspension Jul 23, 2026
JasonB66
J
M
Progress Thread mnky99 2001 V6 evap core, ac compressor, heater core replacement
  • mnky99
  • Sep 5, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
531
1996 - 2004 SN95 Mustang -General/Talk- Sep 5, 2025
mnky99
M
For Sale 2000 GT Convertible 4.6 5 SP Exterior/Interior parts remaining from donor car
  • Tods Hot Rods
  • Sep 17, 2024
  • Suspension Parts
Replies
0
Views
333
Suspension Parts Sep 17, 2024
Tods Hot Rods
J
Progress Thread Family member 1989 GT- Backstory and updates
  • JRC99
  • Apr 19, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
15
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Oct 26, 2025
JRC99
J
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific 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?