who has installed a 14 bolt from a 98 and older truck into a NNBS. Im wanting to upgrade my gears and posi, but im thinking about using a 14 bolt.
Has anyone done this swap and kept the drums brakes. My NNBS has drums anyways, so would I be able to reuse the backing plate and complete brake setup from my truck on the 14 bolt?

 

I haven't seen one my self on a NNBS but If you were to do it, you would want the rear from a 4x4.
The problem with those housings is that the originall backing plate bracket is to far inward. You have to use spacers or get a new bracket made like I did.

I compiled a list of swaps and measurments from some of the more common 14 bolts 9.5

https://www.performancetrucks.net/fo...thread-467473/

HTH

 

thanks fast. i knew that if i wanted disk brakes i would ahve to use spacers, but i wasnt sure about if i used drums.

 

Just so you know the brake offset distance is the same from the flange to the wheel side of the axle on the GMT 800 and 900 plat forum. The GMT 400 is nearly double the distance requiring roughly 2-1/4 inches of shims.

On the 900 they changed the shock mounting tabs from the 800. but I believe the leaf pad distance is the same.