check out ultrastangs site for info on 9" rears and the donor vehicles.  he has great info and lists the lengths, etc.....

The Versailles rear end is a true bolt-in, but it does move the wheels outward about 1/2" per side.  If you have wheels that barely clear, just be advised they will clear less.

You did not mention, but are you looking to get rid of the 8" for a 9" or 8.8?  Those 8.8 deals are pretty good out there.  Find an old 9" and you have to rebuild everything...

Are you driving the 65 to the bash this year?  Sure hope so!

have you checked the pinion angle in relation to the transmission angle??  a mismatch where the angles are not parallel or near parallel will cause vibration at speed.  In other words if the transmission hangs 5 degrees down then the pinion needs to be 5 degrees up within a degree or two.

Daze wrote:

have you checked the pinion angle in relation to the transmission angle??  a mismatch where the angles are not parallel or near parallel will cause vibration at speed.  In other words if the transmission hangs 5 degrees down then the pinion needs to be 5 degrees up within a degree or two.

No thats one thing i have not checked.  Any good suggestions on how to measure that?  I know you can use an angle finder but i will have to find where they would sell one around here.
any alternate advice on how to measure that??
 

thats what I had in mind!!  I'll have to look around this one horse town and see

Here is some first hand experience on a 66 Mustang with T5 and a vibration under load or heavy acceleration above about 70 MPH.

I have chased that vibration for years.  My driveline angles were perfectly set at tranny down 3 degrees, rear end up 3 degrees.  There is evidence on the rear yoke of my driveshaft that it actually contacted the yoke of the rear end repeatedly.

That tells me that parallel angles on my particular car did not work, or perhaps the springs were bending enough to change the angle significantly.. 

When I replace my rear springs, I am going to point the rear end downward about two degrees, so when everything under load gets through flexing and realigning itself, everything at that point should be parallel.

If the vibration persists after the new 427, the new TKO and new rear springs on my near-new 9" rear end, I think I might just sell the car.

Terry, if you just need a good 8" replacement rear end, look for a Granada or Monarch.  They are dimensionally the same as the one under your car if it still has the original.

Last edited by MustangSteve (7/15/2013 7:22 PM)

not to jack your post, but I did a bit of researching for my Gal this morning It looks like what I need to do an 8.8 swap is an 8.8 out of a 99 to 04 Mustang.   They are 61.0625 in width with the pinion centered.  I wonder if there are any decent TL ratios available.   The 94-98 Mustang is 60.25.  

The 94- 2003  Exploders rear axle width is  59.75  with an offset pinion. 
90-97 Ranger is 58.75  (not confirmed on a pinion offset
Crown Vics  are 62.8  


The Ford fullsize is 61.25   

Ford 9-inch rears that are the correct width for a '65/'66 Mustang:

1. 1957-1959 Ford/Lincoln/Mercury big cars. These rear ends will have 11" x 2" drums and small axle bearings.

2. 1957-1959 station wagon or Ranchero. These will have the same drum diameters as #1 but will have large axle bearings.

Drum brake replacement parts for #1 & 2 are not easy to come by but, the drum brakes from Mustang 8-inch can be swapped onto the '57-'59 Ford big car small bearing rear. If this is done, the axles from the 8-inch will also have to be swapped along with the drums from the 8-inch. Cannot mix and match big car small bearing axles with drums from 8-inch.

3. 1965/'66 Mustang (or related Ford) 8-inch or 9-inch rear.

4. 1975-1980 Granada and Mercury Monarch disc brake rear (exact same rear as Versailles).

5. 1975-1980 Granada and Mercury Monarch drum brake rear (9-inch or 8-inch version).

6. 1977-1980 Lincoln Versailles disc brake rear.

For stopped 9-inch rear production in the passenger cars in 1980 (1985 for the F-150  trucks). 

For 30+ years, Ford produced 9-inch rears have been drying up in the wrecking yards. It's not totally impossible to find the needed 9-inch rear but, the task will probably be difficult.

With the exception of the '57-'59 station wagon 9-inch rears or possibly a Mustang 9-inch rear, no other passenger car rear mentioned above is going to have a 'good' ratio in it and even less likely to have a Limited Slip or Traction-Lok differential. Of course, the Traction-Lok (from 1970-on) is a much better differential anyway but, Traction-Lok didn't come out until 1969.

SOME Granada/Monarch drum or disc, or Versailles disc, rears came with 2-pinion Traction-Lok or the stronger 4-pinion Traction-Lok differentials. However, Traction-Lok of either type in these rears is few and far between. The only ratios in the G/M/V were; 2.47, 2.50, 2.75 or 3.00:1. All were 28-spline too.

6sally6 wrote:

t,
I think BulletBob is "modifying" an 8.8 to go under his 66. He could prolly give a BUNCH of advice on the do's and don'ts. He may do a pictorial on "how-to"!! I know I'll be watching too!
6s6

I hope I get to do a post on that swap, Sal, butt (TS&T) since the first of the year my dang hips are really slowing me down.  Right now I'm just hoping to be able to get the car back together in time for the 2020 bash.  Prolly gonna get cut befor year's end. (Me, not the 8.8)

Gittin' old sure do have it's moments.

BB

Last edited by Bullet Bob (7/17/2013 6:24 AM)