Previous Thread
Next Thread
Print Thread
9 1/4 axle shaft swap #2596554
12/24/18 10:46 PM
12/24/18 10:46 PM
Joined: Dec 2018
Posts: 60
IA
T
TLT Offline OP
member
TLT  Offline OP
member
T

Joined: Dec 2018
Posts: 60
IA
Hello all, past member, just rejoined as Im getting back into my Mopars, I did a search and found some info on this, but I have to believe that someone has done this. I have 9 1/4 axle out of a 1990 D-150 with 3.54 gears and a new Auburn sure-grip installed, nice and tight and installed in my 1982 D-150 due to the 1990 rusting to the ground and my '82 axle took a crap. Truck is driving and everything is working well, the 82 has the 5 on 4.5 bolt pattern with new rotors/hubs on front, and the 1990 axle has 5 on 5.5 bolt pattern, so I dont want to switch rotors to get the big bolt pattern up front, I would like to swap the axle shafts from the 82 axle to the 90 axle so my bolt pattern is the same, I have a ton of 5 on 4.5 pattern wheels to choose from. I know there is a slight difference in length between the two years although I don't know why Dodge did that. Is there anyway to compensate for this, or does it really matter? Has anyone tried to do this? Thanks!!!

Re: 9 1/4 axle shaft swap [Re: TLT] #2596565
12/24/18 11:20 PM
12/24/18 11:20 PM
Joined: Aug 2005
Posts: 11,543
chicagoland,usa
B
buildanother Offline
I Live Here
buildanother  Offline
I Live Here
B

Joined: Aug 2005
Posts: 11,543
chicagoland,usa
There was a "C" clip difference between 79 and 85, as well as the axle and or side gear too. Don't know why it was done but pay close attention or wait for more genius replys.

Re: 9 1/4 axle shaft swap [Re: TLT] #2596586
12/25/18 12:40 AM
12/25/18 12:40 AM
Joined: Dec 2018
Posts: 60
IA
T
TLT Offline OP
member
TLT  Offline OP
member
T

Joined: Dec 2018
Posts: 60
IA
Thanks for the reply!, I did some more research and saw that too, looks like this is not going to be an easy swap, 31 11/16" axles, 31 13/16" axles, .176" c-clip groove, .208" c-clip groove, will my new Auburn work?, maybe I should just get some billet aluminum wheel adapters and quit obsessing over it! 1.25" per side will not cause me any clearance issues, and this is just a street toy, no heavy loads so I think I should be fine.

Re: 9 1/4 axle shaft swap [Re: TLT] #2596674
12/25/18 09:57 AM
12/25/18 09:57 AM
Joined: Dec 2014
Posts: 5,709
ohio
R
ruderunner Online content
master
ruderunner  Online Content
master
R

Joined: Dec 2014
Posts: 5,709
ohio
Might be a better idea to contact Auburn and see if you can swap side gears to match the shafts.


Angry white pureblood male
Re: 9 1/4 axle shaft swap [Re: TLT] #2596691
12/25/18 12:33 PM
12/25/18 12:33 PM
Joined: Jul 2007
Posts: 735
Pa. U.S.A.
moparborn Offline
super stock
moparborn  Offline
super stock

Joined: Jul 2007
Posts: 735
Pa. U.S.A.
I have a 1988 and I wanted to small bolt pattern as well.
This was my solution on the rear axles.

20160414_204626.jpg
Re: 9 1/4 axle shaft swap [Re: moparborn] #2597020
12/26/18 02:54 AM
12/26/18 02:54 AM
Joined: Dec 2018
Posts: 60
IA
T
TLT Offline OP
member
TLT  Offline OP
member
T

Joined: Dec 2018
Posts: 60
IA
Nice picture,thanks, but what exactly are you showing me?

Re: 9 1/4 axle shaft swap [Re: TLT] #2597070
12/26/18 09:45 AM
12/26/18 09:45 AM
Joined: Jul 2007
Posts: 735
Pa. U.S.A.
moparborn Offline
super stock
moparborn  Offline
super stock

Joined: Jul 2007
Posts: 735
Pa. U.S.A.
These are c clips that I made to adjust for the different depths of the axle shafts.







Powered by UBB.threads™ PHP Forum Software 7.7.1