Anyone narrow a 9.24 rear?
#3185761
10/22/23 06:16 PM
10/22/23 06:16 PM
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Joined: Jan 2003
Posts: 8,857 poplar bluff mo.
toplescuda
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poplar bluff mo.
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The rear is factory rear (needs rebuild also) in 90 d150 Like to have couple inches shorter each side. As I want to run a 10 wide wheel with least amount backspace on the rims
Don't know what is better option as doing 5he orignal 9.25. Or finding a wide 8 3/4 and cut t9 what I'm wanting
Will the backing plates interchange? How much differance would be on drives haft if put a 8 .75 in it Tia
1970 barracuda convert. 1 of 59 1970 pro street A.A.R. clone (panther pink) 1971 charger 2015 hellcat challenger. Redline red 2014 quad cab 4x4 ram 8 speed hemi
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Re: Anyone narrow a 9.24 rear?
[Re: toplescuda]
#3185778
10/22/23 07:44 PM
10/22/23 07:44 PM
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Joined: Jan 2003
Posts: 10,641 Freeport IL USA
poorboy
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I Live Here
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Posts: 10,641
Freeport IL USA
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The 9 1/4 has axle shafts with the "C" clips to hold the axle in the housing. Those rear ends also have the wheel bearings run on a machined part of the axle itself. If you remove 2" off the end of each axle, you will remove the method the axle was retained, and you will remove most of the axle splines, but then you probably will need to come up with a way to hold the axle in the housing because you never had the pressed on wheel bearings, they always rolled on the axle shafts themselves. I don't know if the performance aftermarket axle shaft companies have replacement narrowed axle shafts for a 9 1/4". An 8 3/4 or even a 9 3/4 might be a better option if you want to narrow the rear end. The brake backing plates bolt onto the 8 1/4, the 8 3/4, the 9 1/4, and the 9 3/4. And if the wheel bolt pattern are the same, the brake drums follow the same brake size across the axle choice. So someone is going to tell you I missed something, I'm blaming my memory.
Last edited by poorboy; 10/22/23 07:48 PM.
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Re: Anyone narrow a 9.24 rear?
[Re: poorboy]
#3185814
10/22/23 10:50 PM
10/22/23 10:50 PM
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Joined: Jan 2003
Posts: 8,857 poplar bluff mo.
toplescuda
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I knew about the c clips. I just fig could buy new axels to your length Thank you very much
1970 barracuda convert. 1 of 59 1970 pro street A.A.R. clone (panther pink) 1971 charger 2015 hellcat challenger. Redline red 2014 quad cab 4x4 ram 8 speed hemi
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Re: Anyone narrow a 9.24 rear?
[Re: toplescuda]
#3185829
10/23/23 05:38 AM
10/23/23 05:38 AM
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Joined: Dec 2014
Posts: 5,947 ohio
ruderunner
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master
Joined: Dec 2014
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ohio
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Might look at Dakota or Durango axles. Have to redrill the lug pattern but might be narrower.
Angry white pureblood male
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Re: Anyone narrow a 9.24 rear?
[Re: Moparite]
#3185846
10/23/23 09:16 AM
10/23/23 09:16 AM
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Joined: Oct 2005
Posts: 8,911 Ontario, Canada
Stanton
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Don't question me!
Joined: Oct 2005
Posts: 8,911
Ontario, Canada
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I just went through this whole 9-1/4 narrowing exercise couple months ago. There was a Mopar Action tech article a few years back and it looked like a good option to a Dana. However, NONE of the big shops out there want to touch one. If you have the time and inclination you can probably do it yourself - all the good parts as well as axles are available. Check youtube - there are a couple good videos about narrowing them.
If the thing needs a full rebuild then I'd just opt for an 8-3/4 if it will handle your power - and anyone will narrow one of those AND you don't have the c-clip issue (which really isn't an issue in the Chrysler axle).
Will the backing plates interchange? YES
In the MA article they swapped out an 8-3/4 for the 9-1/4 and had to shorten the driveshaft. So if you swap in an 8-3/4 you'll need a longer one.
Last edited by Stanton; 10/23/23 09:23 AM.
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Re: Anyone narrow a 9.24 rear?
[Re: toplescuda]
#3185900
10/23/23 12:30 PM
10/23/23 12:30 PM
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Joined: Jan 2003
Posts: 25,988 Rio Linda, CA
John_Kunkel
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Rio Linda, CA
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Another more pricey option would be to replace the housing ends with 8 3/4" Mopar and have a set of custom axle shafts made to use Green bearings..
The INTERNET, the MISinformation superhighway
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Re: Anyone narrow a 9.24 rear?
[Re: toplescuda]
#3185903
10/23/23 12:32 PM
10/23/23 12:32 PM
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Joined: Dec 2006
Posts: 2,120 Byron, NY
W.I.N. Racing
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top fuel
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Byron, NY
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Done one and honestly its a PIA...yes parts are available but Tooling (different that the typical axle housings) will be required to align the bearings if you decide to keep the needle roller bearing set up. You can get into a set of custom axles that fit the Green bearing and change the housing ends but custom axles are required. probably more cost effective to fins an 8 3/4 and rebuild it. depending on what you are trying to accomplish a B body rear with centered wheels works well with out and modifications. The truck pictured had stock rear frame rails, B Body axle, and 13" wide wheels.
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60 '01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust, '05 Dodge Magnum R/T - Too Much to list '60 Willys CJ5 '01 International LPX - Project,DT466, Allison '64 Plymouth Valiant, Inj 528 Hemi, 2spd
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Re: Anyone narrow a 9.24 rear?
[Re: John_Kunkel]
#3185914
10/23/23 12:56 PM
10/23/23 12:56 PM
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Joined: Jan 2003
Posts: 2,742 541 slobovia
A990
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master
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541 slobovia
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Another more pricey option would be to replace the housing ends with 8 3/4" Mopar and have a set of custom axle shafts made to use Green bearings.. I took this route on mine. Dr Diff sold me everything I needed and had Dutchman axles drop shipped. Local shop welded the ends and everything bolted together.
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