Has anyone done a ford 9in swap in an obs chevy truck? If so what does it all involve? A buddy offered me one for like 100 dollars so i was curious as to the benifets of the swap

 

It has been done but it is not a direct swap. You have to have to weld on leaf spring perches at the correct angle. They also have a different wheel bolt pattern.

The benefit would be that the axles are captured in the rear end un-like the 10 bolt that uses a c-clip to retain the axle. Also the Gear is much larger and thicker and can handle more torque.

 

Also curious in this as well. A little work isn't hard

 

Yeah i dont mind the welding and im getting new wheels for bigger tires anyways but will i have problems with the driveshaft length?

 

You will have to probably get it shortened as well as change the bearing.

 

I actually talked to RPM Transmissions in Indiana about doing a Fab 9 in my rcsb GMC. Wouldn't be a problem. Drill the flanges on the axles, weld the spring perches on, set pinion angle, new driveshaft, and modify the existing brakes or plumb with a new rear brake setup.

 

Existing rear brake's from a truck Won't fit on any of the available bolt patterns available for housing ends. They also won't work with the axle bearing retainer.

To build one from scratch your looking at an easy $3500.

You could modify a stock housing alot cheaper but you still need different brakes and you will have to drill and modify them to work with 6 Lug or swap to five lug rims.

 

I'm referring to getting a set of axles specifically for a Ford 9" and drilling those axle flanges for the 6-lug bolt pattern of the truck. Also, have to use a new brake setup or use a rear brake system from an explorer which can be purchased new. Either way it would have to be new since the factory components on the truck currently would not work regardless.

 

I said nothing about the axle shafts. Only that the current stock silverado brakes will not bolt up to any of the available housing ends. And you would still have to modify the Explorer rear brakes for the 6 lug which means you will probably have to pay someone to weld and re-drill the pattern.