A few weeks ago I pulled my rear axle down to install 4.56 gears and found my trac lock had come apart and trashed my housing. My buddy just happened to have a gm 14 bolt with 4.56 and a Detroit locker laying around so I thought it would be a good time to upgrade.
I thought it would be a simple swap and just swap my D44 outers to gm 3/4 8 lug to take care of the front..........
Well the front was easy.....
After a few quick measurements I quickly saw that a disc brake conversion was a must! No way in hell it was going to fit with the drums. You can see how close it was to not fitting.
Here is with the drum removed
Once I got the disk brake on I had to tackle the drive flange issue. I planned on using the napa 1/2 ton to 1 ton conversion U joint but dodge uses a odd size so I had to do some custom drive shaft work
I tied up the ABS sensor and took it out for a spin.
Thats when I said oh **** no speedo oops
I didnt realize that the PCM used the ABS/tone ring for a VSS. I pondered for a few days and started looking at tone rings that would fit a 14bolt. Turns out a dana 70 is damn close so the truck went back on the lift and out came the carrier and on the lathe it went
soon I was in business