Thread: Bronco II Rear verses 65 Ranchero Rear

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Originally Posted by 406Rich

Vara, here`s some info I had found and had posted on another site a while back...
For those that are thinking about the F**d 8.8 not nessarily the explorer but the mustang, there are several models to choose from, some will have four lugs, but you can change them out with ranger left side axles only, or you could get lucky to pick up a five lug axle heres a list from Randys ring and pinion of the models keeping in mind that the larger wehicles will use the offset pinion and wil require housing / axle change. They did however use a lot of posi units in the ranger trucks, mustangs, t-bird and couger turbo coupes, 4/5 lug.
Aviator: 2003 - 2005 (Rear)
B3000: 1991 - 2002 (Rear)
B4000: 1991 - 2002 (Rear)
Bronco: 1987 - 1996 (Rear)
Capri: 1986 - 1986 (Rear)
Cougar: 1988 - 1996 (Rear)
Crown Victoria: 1992 - 2006 (Rear)
E150: 1983 - 2006 (Rear)
E250: 1983 - 1998 (Rear)
Expedition: 1997 - 2003 (Front)
Expedition: 1997 - 2003 (Rear)
Explorer: 1990 - 2003 (Rear)
F150: 1959 - 1987 (Rear)
F150: 1983 - 2006 (Rear)
F150: 1997 - 2006 (Front)
F250: 1997 - 1999 (Front)
Mark LT: 2006 - 2006 (Front)
Mark VI: 1980 - 1983 (Rear)
Mustang: 1986 - 2005 (Rear)
Navigator: 1998 - 2005 (Front)
Navigator: 1998 - 2006 (Rear)
Ranger: 1990 - 2005 (Rear)
Thunderbird: 1987 - 1995 (Rear)
Town Car: 1981 - 2005 (Rear)

and some more...
If you are wondering what type of rearend or even what size it is this should help. You can find the axle code on the tag that is mounted directly on the axle housing. Another sopt is a white sticker located in the doorjamb there is either a number or letter under axle. Conventional or "open" rear ends break down as follows: 8-2.73, Y-3.08, 5-3.27, F-3.45, 6-3.73. Locking or "Traction Lok" break down as follows M-2.73, Z-3.08, E-3.27, R-3.45, W-3.73.

'79 5.0L Mustangs and Capris did not have Traction-Lok. Traction-Lok was first available in Mustangs and Capris in the '81 model year, and it was optional with the V8, not standard. It became standard with the 5.0L V8 (still optional with the 4.2L v8) starting in the '82 model year.

5.0L mustangs and Capris could not be ordered with a ratio higher than 3.27:1.

There was a 2.26:1 and a 2.47:1 ratio available with a V8 early in the Fox years.

Thunderbird Turbocoupes in '87 and '88 had an 8.8" rear, 3.55:1 with a manual transmission and 3.73:1 with an auto.

Lincoln Mark VII's came with an 8.8" rear, Traction Lok was an option

The only Mercury Cougar that came with an 8.8" rear was the XR7 models and was a Traction Lok with at least a 3.08 gear all others were 7.5"

Hey Rich, did they happen to include the width from WMS to WMS for these rearends?

Randy i`ll see what I can find, I had dug up this info on `09 the ranger was a good choice because of width (58 inches ), and most all were 5 lug with gears, but the jeepers and rock crawlers and mustang owners picked them over for the axles, other than that next inline was the mustang / or t-bird turbo coupe width wise. They are relatively strong, just not as strong as the true 9-inch. The 4x4 housing is narrower than the standard pickup housing from what I`m told.....

Another option to consider is the 8 3/4 mopar, espescially from an A-body, although you`ll have to change out the axles because most were 4 inch pattern.
A-body 66-72 -------------------------- 57 1/8"
B-Body 62-63 -------------------------- 58 1/2"
64-67(except 64 Max Wedge) - 59 1/2"
68-70 -------------------------- 60 1/8"

the best third member to get is 489 housing next being the 721, both came in suregrip or the cone style ( not as good ) ratios from 271 to 430 in street form.
Google Image Result for http://www.sweptline.com/tech/reardif2.jpg

This might help.
Rear End Widths