I am swapping my rear axle with drum brakes to a 3rd gen axle with disk brakes. If I buy an adjustable proportioning valve and set it up for disks, would my abs still work in the rear? I would route all the brakes lines the same way as stock. The 3rd gen axle uses the same abs system as the 2nd gen. I have been told I don't need to swap the proportioning valve but I'm asking thjs just in case.

 

I don't think it's that easy. The 2500/3500s got rear disks during the 2001 MY and both the master cylinder and the "combination valve" (proportioning and metering valve) are different. You'd likely need to swap out both. In terms of ABS function, double check that the tone ring is the same on 3rd gens and understand that using the wrong proportioning valve will make one axle brake disproportionally harder and have the ABS kick in earlier.

 

I swapped out my 2nd gen drum brake Dodge Dana 60 to a 2000-2001 2nd gen disc brake Dodge Dana 60 in my '96 Ram 2500 4x4 a while ago and did not change anything except the sensor on top of the rear. I used a sensor for the '96 model year so that it would connect to my existing harness without splicing it and it worked fine. The later model year sensor had a different style connection, but was still a two pin sensor. The brakes are still working great.

 

I have read where I could possibly add a check valve on each side right before the soft lines to hold like 2 psi of pressure in the caliper at all times? That would make up for the lack of pressure cause by the drum brakes proportioning valve. Apparently that's what the EGR kit uses so that you can keep the stock proportioning valve. Thoughts on that?

 

I have used both and am currently using a disc proportioning valve with drum brakes. I notice no difference in stopping and have not found a difference in them. Looking at a Durango Dodge lists the same part# for the drum and disc

 

so have you used a drum proportioning with disc brakes? Have you tried that on a 2nd gen? At this rate I'm just gonna through the rear axle under and go from there. If I need an adjustable proportioning valve I'll get on

 

Yes both were done on a 2nd gen. Noticed no difference. No lockup when hard on the brakes.

 

were you able to lock them up if you wanted to though?

 

Only on gravel ABS wouldn't allow lockup even with the disc brakes. Only reason I'm running drums is because I'm regearing the axles