Axle strength

[Duranged98]

How strong is a ford 9" rear? Will it handle 35" tires on a 5000lb vehicle?

 

[Rich]

with what spline count?
How much power & gearing?
What's your driving style?
Locker?

As a broad generalization, I would say in stock form, no, but it could be built to handle it.

 

[Duranged98]

31 spline
300 hp @ motor
4.56-4.88 gears
locker? yes

 

[BigJUGGY]

I'd run it like that....till it breaks....

 

[6BangBronk]

Seen em take a licken and keep on ticken. The weak link is the side bearings. They go bad and start leaking rear end fluid down through the drums but an easy $25 per wheel fix if you run them too hard.

 

[Duranged98]

I'm planning a SAS with HP 44 front and either a 9" or a 60 out back.

 

[Rich]

I'd run it like that....till it breaks....

x2, and save for a 35 spline upgrade while you run the 31, just in case.

 

[BRUISER]

I have 31 Spline 9" Stock shafts with 38's and it handles fine "so far"