Originally Posted by John_Kunkel
Originally Posted by ruderunner


A proportioning valve is needed for disc drum systems. It's not required for drum drum or disc disc.


And, yet, the factory often uses them in disc/disc installations. IMO, the only way to know is actual testing...slam on the brakes at speed and see what happens.


iagree 100%

www.tandmautomotive-omaha.com