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????5.0 Mustang rearend in a 74 Duster????

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????5.0 Mustang rearend in a 74 Duster????

moparmadness1 moparmadness1
User | Posts: 90 | Joined: 09/07
Posted: 12/11/07
07:37 PM

I'am having trouble finding a budget(cheap) rearend for my duster.I was told a 92 to 96 5.0 Mustang rearend would fit in my Duster with little problem and would handle my 318...Is this true? Mustang rearends are easy and cheap to find,thats why i'am asking....  

BadFish BadFish
Moderator | Posts: 329 | Joined: 01/07
Posted: 12/13/07
07:43 AM

I'm not sure if it will fit, I'd keep it all Mopar by finding an 8 1/4 A-body rear end from a 70 t0 75 duster, Dart, Valiant, or Dart Sport.  

moparsik moparsik
New User | Posts: 30 | Joined: 04/08
Posted: 04/28/08
09:03 AM

ya know, Im with de fish. I hate to see peaple bastardize different makes (excuse the termonalogy) Even the fact that peaple put 9 inch fords in a lot of rides. Thats ok I guess for brand X ers'.Not mopar in my opinion. And not to put anybodys rides down. I think the 8.75 is a great rear. 2nt best to a dana 60. Peaple think since it has a 9" ring gear its stout. The ring gear is not where the abuse comes from. Its the pinion. If ya cant find a rear let me know. There is plenty of good rears around here, that will bolt up to your application  

dfranker3 dfranker3
New User | Posts: 6 | Joined: 05/08
Posted: 05/19/08
11:18 AM

keep it mopar, dont have anyhting to do with ford in your duster  
mopar or no car

74Duster 74Duster
New User | Posts: 10 | Joined: 12/07
Posted: 06/21/08
07:46 PM

A rear end from a 72 Maverick will work. I almost done this to mine. The pinion is shorter and you'll have to find a longer driveshaft. I changed my mind and just stayed with the 8 1/4 with a suregrip. Life is good.


itsjustmeroy itsjustmeroy
New User | Posts: 3 | Joined: 12/07
Posted: 06/22/08
09:43 AM

If you want to use a ford rear, use the 8.8 from a ford explorer SUV its almost the correct size (1 inch shorter I think) and it already has the 5 bolt drums.  If you want to stick with mopar and have a 8 3/4 get your self a c-body diff and cut the ends off and have new ends welded on from a company "Gears r us" or even "Summit racing" carries them then all you need are a set of axles which are available from "Yukon gear and axle" , install some "Green bearings" and you are all set.  Have a good welder install the new ends at 52 1/2.  The ford option would be a lot easier and cheaper and you can get more gear combinations cheaper.  

moparmadness1 moparmadness1
User | Posts: 90 | Joined: 09/07
Posted: 06/22/08
12:28 PM

I have a Mustang 8.8 installed in my Duster (is for sale,see post)It was easy I have a set of 5 lug axles on the way.So if someone one wants to buy a Duster see my post "74 Duster 4 sale" I put alot of work into her.would make agreat street car  

Bucannon Bucannon
New User | Posts: 32 | Joined: 03/08
Posted: 06/29/08
06:28 PM

i need a 8 3/4 big bolt pattern, any help?

im in savannah, Ga  
1972 plymouth satellite.

summer 08 project.

moparsik moparsik
New User | Posts: 30 | Joined: 04/08
Posted: 06/29/08
10:52 PM

randys r&p(1-866-246-5686)They have large bolt pattern axles for 118.00 bucks ea.They mite even throw ya a deal with the green axle package pressed on,longer wheel studs.Good luck on your 8.75  

LXguy LXguy
New User | Posts: 1 | Joined: 08/08
Posted: 08/04/08
11:18 AM

First, Mustang axles are the same from 87-93 (8.8 in 8 cylinder cars only).  In 94 they changed to rear disk, and the axles are slightly wider.  In 99, they got wider again.

Mustangs have an upper/lower control arm arrangement, so at a minimum you're going to have to chop some of the existing mounts off and weld in new spring perches.

8.8s are really strong.  With 31 spline stuff in there, it would take a lot of abuse.  However, I'm with these guys. Try to dig up an 8-3/4 and save yourself a ton of hassle and hybridizing your car.  

drmopar drmopar
Guru | Posts: 1445 | Joined: 02/08
Posted: 08/04/08
04:39 PM

Save your self a lot of grief and install a dodge rear end. For a 318 an 8 1/4 will do and there a dime a dozen. Everything bolts in no hassle.
If you think you are ever going to drag race your car with slicks than spend the extra cash and find an 8 3/4, again bolt in no hassle.  

danrt danrt
New User | Posts: 1 | Joined: 10/08
Posted: 10/27/08
10:08 AM

How about using a 9 1/4 rear out of a 97-2003 dakota such as in the r/t's?  

New User | Posts: 1 | Joined: 02/13
Posted: 02/06/13
10:41 AM

I JUST DID ONE. I USED A 8.8 FROM A EXPLORER AND CUT DOWN THE LONG SHAFT 3''. I set the perches at 43'' which is about 3 7/8'' center of perch from backing plate. The perch also falls across the cut and will help to strecthen it. I got my 373 posi at the wrecking yard for $300 with the short side axle and drive shaft. I set the pinion angle at the same as the 7 3/4'' rear end that I took out (5*). Hope this helps as I searched high and low and this was my only solution for a 440 duster heavy duty rear end.  

Serpico Serpico
New User | Posts: 4 | Joined: 02/13
Posted: 02/06/13
11:31 AM

Don't use anything smaller then a 8.8" ring gear. The smaller rears will not take any kind of power.If your lucky to find an early Mustang Rear, forget finding a 9" Ring and Pinion unless someone did it, it also cuts down on the fabrication. The Explorer rears are the way to go. Just one other thing to remember the offset of the Ford Yoke, and set the correct pinion angle before you weld everything together.
  Sounds like Duster 440ER has done a nice job. I'd stay with him. It's really nice when its done correctley. Good Luck.

Bob AKA pepsi1  

440roadrunner 440roadrunner
New User | Posts: 3 | Joined: 11/10
Posted: 03/08/13
11:01 PM

I run a 9"  Ford  which was factory  in "a few years"  of the  Monarch/ Fairmont/  Lincoln  Versailles  platform.  It's quite literally  a bolt-in.  If I recall the spring pads are 1/2" wider than factory, so 1/4" each side.  Mine is factory disk brakes, and slightly  different  width  can be  taken care of with wheel offset.

The problem  with everybody preaching  8 3/4  is finding a A body housing in the big bolt pattern.  My understanding is that the earlier  (pre 70?)  8 3/4 rears  can fit the A bodies  with different wheel offset

"All Mopar?"    Ma  doesn't GAS  about  YOU  why would I GAS  about  Chrysler?