what 9" rear end will bolt right in a maverick?

Hello,
Does any body knows what 9" rear end will bolt right in a maverick? did all the 9" rear end came with possitive traction? did all the 9" rear end came with a good gear ratio like 3:55 etc???

Please help!!!

 

1st question: 57-59 Ford 9", followed by the late 70's Granada/Monarch/Versailles 9" which in disc brake form is 1" wider than the stock Mav rear. All others will be wider and/or require mods to work. 2nd question----No. Very few came with Traction-loc or Detroit Lockers (these are the only two "Posi" units I can think of that were at one time or another offered in production 9" rears) Gear ratios varied from 2.47 to 4.10's, the vast majority were 2.75 or 3.00. Best and easiest application to find both a Traction Loc and 3.50's (no 3.55's in 9's) are the Bronco rears.

 

Okay,
I'm looking in geting a 9" differential with drums, more likely it's going to be a 57-59?

 

good luck. they're getting hard to find and they're not cheap these days.

 

this has beed discussed a few times if you want to run a search you'll probably get a better answer.

gear ratios can be diffrent but they are interchangable with any other 9. im not sure about the posi but i dont think they are, i could be wrong. 57 ford rears are a direct bolt in 9'', early mustang ones can be made to work but there slightly shorter (or wider) so youd need to adjust back spacing on your rims. like i said run a few searches, theres quite a few threads that have been posted that will help you out

good luck

 

You can use a Bronco rear (years 66-77). It's about 1.5" longer than the maverick 8". You will have to move the spring perches from the Bronco's 36" spread to the Maverick's 43" spread.

 

The one that most folks go for is a 9in. from a Lincoln Versailles because it bolts right in without having to change the location of the spring perches, and also gives you disc brakes. The whole unit is 1 inch wider overall but this does not hurt anything and actually allows for wider wheel/tire combinations. You have to do some driveshaft and parking brake cable modifications but it's not a big deal. I wrote an article covering all aspects of this swap several years ago - if you'd like a copy, PM me with your email and I'll send you one.

 

Why do you feel that you NEED a 9"?? The 8" can be built to handle most any street driven car and it weighs less and takes less HP to turn it.Save your money unless you have to have the strength of a 9", like over 400something HP.Just my 2 cents.

 

Alot of work to get that one in.
Doesn't bolt right up and has 5 on 5.5" lug pattern for brakes and axles.

I have broken 4 8" rears...
3 were with 302s
2 of those were with C4s
and all 4 were with no traction and street radials.
The 8" is a weak rear IMO.

Also, why do folks keep throwing out the weight issue when it is a very small difference?
Yes, the 9" weighs more, slightly more.
If you build an all out 9" with the strongest stock parts, the weight can add up. Then again, if you have the budget, aftermarket 9" parts are made stronger than stock and can be had very lightweight.
On the subject of budget, it is the same cost, if not cheaper to build a 9" rear because the parts are so very common. While the 8" stuff is harder to find and consequently more expensive (or at least no cheaper).
So if you are going to spend the money to build an 8", why not spend the same money to build a 9"?
Common sense IMO.



This subject comes up so much, I am almost tired of posting...

Bolt in 9" rears:
65-66 Mustang (.75" wider)
Granada/Monarch (.75" wider)
57-59 Ford (.75" wider)
67-70 Mustang/Cougar (3" wider IIRC)
71-73 Mustang (6" wider IIRC)
Versillies (1.25" wider)

Any of these rears will bolt right in.
They are all some degree wider than stock.
This requires careful selection of rims and adjusting backspace.
The 71-73 Stang rear is almost useless to a Mav unless you are already set on using late model rims. Then it is perfect because spacers won't be required.
As mentioned, the Versillies rear is always disc brake.
However, parts are expensive because they are not common.
Also, the technology for the discs is old and heavy.
The disc 9" is VERY heavy due to the old school discs.
Modern discs from 8.8" rears bolt onto 9" rears and are same weight as the stock drum brakes. Also the modern discs use a cable parking brakes that is almost plug n play with our brake cables.

Another option:
Do what Shelby and Ford did when they needed 9" rears that didn't exist at the moment:
Take your 8" housing and cut the tubes off, then weld them to the center of a 9" housing. That way you can use a donor 9" that is not narrow or sought after. Common, unwanted 9" rears are everywhere cheap or free if you look. You won't find any of the rears I listed above cheap/free.
Anyway, with your tubes welded to the 9" housing, your pinion angle is right, the spring pads are right, and (best of all) the 8" uses 28 spline 9" axles... So the axles don't need shortened or resplined. Just use a 28 spline 9" chunk and plug em in.
This mod is 200 bux here locally. Your price may vary.

 

Sorry but I couldn't find it.
this is a loot of help thank you!!!

 

Dave, post it to an article. That way the info will be readily accessible and easy to find...

 

Picture is of my 9 inch Versaille rear housing that I just went out and measured from outside flange to outside flange and it is 52 3/8 inches. It bolted right up to my spring perches with no problem. My 3.50 geared "N" case center section was out of my Gran Torino Sport and the traction lock unit came out of a 6 cylinder van.

 

I have access to a jig that lets you bolt your Maverick 8" rear end to the fixture and set a rig at that rear end's pinion angle. You then remove the Maverick rear end, bolt two new spring perches to the jig, and lay any rear end, be it a 9" or an 8.8", in the spring perches and rotate it to the right pinion angle, and then weld it to the spring perches.

With the right drill press and rigging, you can drill out new holes on Bronco axles and press in or bolt new wheel studs.

Any rear end other than those very few are going to require some modification to work on a Maverick. Drilling holes in axles, moving spring perches, and even putting 8" axle shaft housings on a 9" rear all require some effort, careful measurement, and good welding.

 

This thread should have stayed in "Parts Interchange" where it started since it deals with rear axles meant for other vehicles. Since it was moved the posts got out of sequence and aren't quite the same as they were intended.

But back on topic, Stefan was nice enough to publish the article I wrote many years ago concerning the Versailles 9 inch rear swap. It can be found in the tech articles section and addresses many of the questions asked in this thread.

 

I'd say the best way to get a 9" is what dave (ratio411) said. Get a Bronco/F150/Econoline differential, cut the tubes and weld the 8" tubes from the Mav. Rear discs from a SN95 stang, explorer, crown vic, etc.

Then you have the indestructiveness of a 9" with modern disc brakes. Save time getting all those parts instead of looking all day in junkyards. If Mavericks are rare to see in your junkyards I guess Granadas/Monarchs/Versailles are harder to find, just like over here.