Rear axle in 07-13 Silverado 1500 4x4's with 5.3L?

[AJMBLAZER]

So what's the rear axle in 07-13 Silverado 1500 4x4's with 5.3L?

Good ol' 8.6" 10 bolt?

I know the 2014's now have the 9.5" rear axle but I may end up with a low mileage used truck of the previous generation. Wondering about the rear axle.

 

[swettysblazer]

Yup. At least in the Non-HD version

 

[AJMBLAZER]

Yaaaay...

 

[swettysblazer]

A guy came into work yesterday because he blew his gov-bomb up in his 08... I told him to buy a better posi and he looked at me funny

 

[AJMBLAZER]

I once knew a guy who filled his with lead. Said it worked for quite a while as a pretty good spool.

 

[dhcomp]

Yaaaay...

With the torque management software on these newer trucks, i'd bet that its a lot harder to hurt a 10 bolt without a performance tune or serious abuse.

 

[shady]

I thought they were all the sf14 bolt. my 05 1500 is.

 

[AJMBLAZER]

I think it's something to do with the towing package.

One of my employees just bought a '10 GMC 1500 that's pretty loaded. Ought to check what his has.

 

[herkdriver007]

I think it depends on the motor option whether they get the 14 or 10 bolts

 

[dhcomp]

I'm guessing is the same as the 90's.

There were 2 different GWVR's for those trucks. Whatever triggered the higher (motor, chassis layout, tow package?) got the bigger rear axle.

 

[herkdriver007]

9.5 14bsf only available with the 6.0 or 6.2 from the factory in the GMT900 trucks.

From what I have read and seen, even the NHT (max trailer pkg) 5.3 trucks comes with a 10b rear

Edit...looks like if you tried to select nht it would make you select the 6.2l engine...

 

[shady]

after looking at my 05 a little closer I found it IS a 10b