rear end swap
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Junior User
Joined: Oct 2003
Posts: 57
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From: British Columbia
rear end swap
I blew the ring and pinion on my 93 f350 crewcab and was wondering if a sterling 10.25 rearend from a 99up would swap in without too many complications. I know the wheel bolt pattern is different, but wheel adapters would fix that. Just mostly wondering about u-joints and e-brake. the reason i want to do this is to get disc brakes. thanks, Joe
Last edited by Never Done; Dec 6, 2005 at 12:58 AM.
Senior User
Joined: Aug 2005
Posts: 158
Likes: 1
Well, my 87 has a 10.25, so that diff has been in use for a while. I would say your best bet, unless someone here has done it and can just say yes or no, would be to break out the tape measure.
Check the
1. distance between the wheel mounting surfaces (a little variation here would probably be ok)
2. distance between the spring perches (you could relocate the perches if necessary)
3. the width of the spring perches (you could swap perches if necessary)
4. U-Joint size (if different, you can get U-Joints with 2 different bearing cup sizes or have your drive shaft modified for the newer yoke)
If the perches line up and the width is close, I'd say it should be fairly easy. Otherwise, it would require some welding (professional welding, unless you trust yourself). Regardless, I don't see why it couldn't be done.
Other things to consider:
E-brake, how are the cables connected to the disc setup?
ABS sensor(s) My 87 has one sensor in the pumpkin. The newer models may have a sensor at each wheel.
ABS computer, will the rear disc brakes confuse it?
Master Cylinder & proportioning valve, will they support 4 wheel disc?
Check the
1. distance between the wheel mounting surfaces (a little variation here would probably be ok)
2. distance between the spring perches (you could relocate the perches if necessary)
3. the width of the spring perches (you could swap perches if necessary)
4. U-Joint size (if different, you can get U-Joints with 2 different bearing cup sizes or have your drive shaft modified for the newer yoke)
If the perches line up and the width is close, I'd say it should be fairly easy. Otherwise, it would require some welding (professional welding, unless you trust yourself). Regardless, I don't see why it couldn't be done.
Other things to consider:
E-brake, how are the cables connected to the disc setup?
ABS sensor(s) My 87 has one sensor in the pumpkin. The newer models may have a sensor at each wheel.
ABS computer, will the rear disc brakes confuse it?
Master Cylinder & proportioning valve, will they support 4 wheel disc?
Post Fiend
Joined: Mar 2002
Posts: 19,402
Likes: 38
From: Bonita Springs FL
I would also be concerned about the VSS that your truck has (had). I don't know if the newer trucks used the same sensor, put it in the same place, etc. If you lose it, you lose your speedometer, cruise control, rear ABS, and if you have E4OD, the ability to shift correctly.
