Ford 9" rearend, how complicated??

[LynnJr]

Originally Posted by UATahoe

Awesome! So this is what i need? Also, notice it has an electrical plug in on the end of it. Does the factory valve have that?

Doesnt seem like it should be too hard to do. Especially right now while the motor is out. It seems like lately though most guys are having trouble with their rear disc conversions. Really dont want those headaches. I do know right now though, the rear drums seem to catch and sort of lock up really easily in any type of aggressive braking. I am guessing switching to discs would help that along with the prop valve.

If you look closely at my terrible pictures you will see the plug on the factory valve.When you stomp on the brakes and the brake lights come on it is that plug/sending unit completing the path that turns on the lights.You need it on a street truck but don't on a race truck.
On your current set-up locking the rears p this is quite common.As you apply your brakes the suspension compresses in the front and the back of the truck lifts up.As press harder the front really noses down and the back comes up even more shifting all the momentum forward and taking weight off of the rear.You end up locking up your rear tires.
The valve helps balance out that problem but on a factory vehicle it is pre-set and not adjustable.As you modify or change things on your truck like bigger tires a drop kit or a camper your proportioning valve stays the same so your braking is not perfect.
Any time you do a swap there are little gremlins that pop up.
In a swap like this expect to drill a new hole or two for the valve.
Expect the brake lines running into it needing attention like re-bending or different size ends.
Expect to use some solderless connectors to hook your wire to the new one.
Expect to run a custom parking brake line meaning one end will be too long so you will likely need to cut it to fit and then clamp it.They usually come with all the parts necessary.
Expect to buy new U-bolts
Expect a new universal or two.
Expect you might need to use a couple shims to get the pinion angle right especially if your truck is lifted way up.
Usually these are quite easy to do especially since it is already sitting it a chevy.The little gremlins are more annoying than a big deal.