Originally Posted by j.fonder

this seems to be the trend today. hahaha

i would never ever do a rear disc conversion on these trucks, especially with those junk eldorado calipers.

you're sacrificing pad surface and a good e-brake when switching to discs. 3" pads and 1 ton cylinders are great on the backs of these trucks when properly adjusted.

Originally Posted by maybe368

That may be your experience, but mine have never been better, but it took a new bendix master cylinder to get there. You might lose your teeth if you brake hard and the parking brake works great too...Mark

Originally Posted by BC847

FWIW: I did the rear disc conversion on my mess using the Eldorado calipers with E-brake. With the stock/OEM MC, I felt the pedal stroke was too long so, . . . .

- I changed the master-cylinder to one from a 1983 Dodge B350 gasser. It has a cylinder diameter of 1.3125" where as our stock/OEM cylinder is 1.125". That will move more fluid with the same stroke length compared. (Had to narrow the new cylinder's mounting holes to fit our power booster).
- Added a 10lb residual-pressure valve to the rear brake line. This reduces the amount of "Pump-Up required" if you will, with the rear calipers.

Works like a champ!

Originally Posted by bigragu

. BC, tell me more on this residual-pressure valve- will it work on the stock drum brake system? Any pics or links to this valve?

Originally Posted by j.fonder

a RPV just keeps constant pressure on the brakes. many stock m/c's have them built in for rear brakes. as BC mentioned, tightens up the pedal.