ok guys i have drums in my existing rear...im doing an axle swap to 2500 and i was wondering if i have to get drums on that or can i get one with discs?? will it match up, will the master cylinder be sufficient??

 

by the way, has anyone heard from meanwhitemopar?

 

I'm pretty sure the 2500 only has drums in the rear. They are much bigger than the 1500 drums. So it's an upgrade in itself.

 

well whenever i call the junkyard they ask if i want drum or disc brakes?? i think they went to discs in like 00 or 01 maybe the early 02's

 

Yea, I think you are right.

However, I don't think you will have any issue with the MC either way.

 

Three master cylinders are used in BR models. The
differences between' them concern cylinder bore size
and fluid reservoir capacity.
• The master cylinder in 1500 models has a 28.6
mm (1.125 in.) bore.
• The master cylinder in 2500 and 3500 models
has a 31.8 mm (1.252 in.) bore.
Although the master cylinders used in 2500 and
3500 models have the same bore size, they have dif- .
ferent piston stroke lengths and fluid reservoir
capacities.


This is from the 96 FSM, not saying you will have problems but something you may wanna look at.

All 1500 models and early year production
2500/3500 are equipped with rear drum brake assemblies.
They are two-shoe, duo-servo units with an
automatic adjuster mechanism.
Drum brake assemblies used:
² 1500 models: 11 x 2.25 in.
² 2500/3500 models: 12 1/8 x3.5 in.

From the 2001 FSM

 

Not to thread-jack but, would it be possible to use the master from the 2500 in a 1500 to get better braking?

 

It won't help because the cylinders/calipers/shoes/pads are still smaller on the 1500.

 

NOTE: Master cylinders and reservoirs must not be
interchanged. This will cause unsatisfactory operation
and improper brake balance

From the very next paragraph in the 96 FSM.

You would have to re-plumb every thing I would thing to accept the increase fluid pressure or you risk blowing out lines.

 

probably the proportioning valves.