rear diff. width

[oiler]

Can anyone tell what width ofa diff they are using on either their 32 or Model A?
I can't remember what the diff. width was on my 32 and I'd like to get the quickchange ordered for my 29.
It appears that my A is 42 1/2 wide at the bottom of the wheelwells where the 32 was 40 1/2
A flange to flange spec. would be great Thanks
Jeff

[Dave]

70-71 maverick or comet 8 inch is perfect with a 3 1/2 back space wheel. I can measure the one in the 32 tonite but i can prolly only get you a bakcing plate to backing plate dimension. I DONT THINK AT THE MOMENT I CAN GET IT OUT FAR ENUFF FROM THE WALL TO PULL BOTH WHEELS BUT I CAN TRY... caps lock again I sure dont know why i dont have that dimension on paper  :!: Search the web and someone should have measurements on em.
Dave


Never mind try this
                          Ford Rear Dimensions
                               by Dave_C and the Fordnatics mailing list.
Here is a list of rear ends that I picked up some time ago on the Fordnatics mailing list.
These measurements are from flange to flange. Subtract 5" for bare housing length.

65-66 Mustang 57.25 inches
67-70 Mustang 59.25 inches
71-73 Mustang 61.25 inches
77-81 Versailles 58.50 inches
74 Maverick 8" 56.50 inches
75 Mustang II 8" 57.00 inches
67-73 Mustang, Torino, Ranchero, Fairlane 9" 59.25 inches to 61.25 inches
57-59 Ranchero and station wagon rears, 57.25 inches
66-77 Bronco 9", 58 inches
77-81 Granada/Versailles, 58 inches
67-71 Comet, Cougar, Mustang, Fairlane, 59.25 inches
71-73 Mustang, 61.25 inches
64 Falcon 58 inches
67 Cougar 60 inches
67 Fairlane 63.50 inches (coil springs)
72 Ford Van 3/4 ton 68 inches
73-86 65.25 inches
57-59 Ranchero and station wagon 57.25 iches (narrowest 9" housing)
66-77 Bronco 58 inches but has 5-on-5 1/2 inch diameter bolt circle
67-73 Torinos, Rancheros, Fairlanes 59.25 inches or 61.25 inches
67-71 Comets, Cougars, Fairlanes 59.25 inches

Where to find the 9" rear axle
67-73 medium and big block Mustangs and Cougars
66-71 Fairlanes, Torinos, Montegos, Comets, and other Ford intermediates
with big blocks
57-59 V8 Fords and Mercurys
77-81 Lincoln Versailles & Trucks

Type of 9" axle housings
67-73 Mustang/Cougar - light duty, thinnest housing material, small axle
bearings, 28 and 31 splines
57-68 passenger car and 1/2 ton truck - medium duty, stronger than Mustang
type, 28 and 31 splines
Ranchero/Torino - heavy duty thick wall housing, 3.25 inch diameter axle
tubes with flat tops
69-77 Galaxies (coils), Lincolns (coils), and late pickups (leaf)- 3.25
inch diameter all the way to the backing plate, coil housings have upper
control arm mount

How to recognize 9" housing centers
57 - no dimples, flat center band up the center of the rear cover, bottom
drain plug
58-59 - two dimples on back of housing, flat center band, some had drain holes
60-67 - two dimples, flat center band, oil level hole in back cover
63-77 Lincoln, LTD, Thunderbirds had 9.375 inch centers, housings were cut
away at the gasket surface for ring gear clearance, one curved rib at the front
top portion of differential. Strong, but no gears.

Types of 9" Axles
28 spline axles cannot be shortened and resplined (they're tapered)
Some can: 69-73 Mustang and Cougars have a straight 28 spline axle.
72 and earlier 31 spline axles have the ability to be shortened
73 and later 9" (big cars) have a 5-on-5 bolt circle and the axles cannot be
shortened
67-73 Mustang axles identified by wheel flange:
oval hole - 28 splines two large holes and counter sunk center - 31 splines

[oiler]

no you don't have to do that Dave.
I'm positive I had a Grenada diff. which measures out at 58  according to your chart
It fit perfectly with 3 1/2 backspacing.
So I'm thinking that if I get the quickchange 60  (to make up for the wider frame) then I should be very close to the ballpark
Jeff

[enjenjo]

you can find the info here too, http://enjenjo.com/9inch.html  which is where most of that was copied.

[Charlie Chops 1940]

Generally 56-57" total width seems to be best for 32's. I have a 55" in the current buil and it will require back spacing down around 3" which is pretty shallow.

charlie

[Dave]

Generally 56-57" total width seems to be best for 32's. I have a 55" in the current buil and it will require back spacing down around 3" which is pretty shallow.

charlie

So instead of being so cheap why dont you do it right :!:  :?:  :!:    
Hey what you doing saturday big guy..  :?:  :?:
Im thinnin bout coming up to check out that hood and whatever if i can get directions..
Ok if I bring Sue :?:
Dave