Who has Dr. Diff 8 3/4 rear discs?
Technically, NO proportioning should be needed if the front caliper piston size and the rear caliper piston sizes are compatible. Drum/drum systems relied on wheel cylinder sizes to determine proportioning. The same applies with disc/disc systems.
I have a 2.75" single piston caliper up front and the 1.5" piston Dr Diff/Mustang Cobra rear caliper with just a drum brake combination valve. My front skids before the rear but just barely.
Technically, NO proportioning should be needed if the front caliper piston size and the rear caliper piston sizes are compatible. Drum/drum systems relied on wheel cylinder sizes to determine proportioning. The same applies with disc/disc systems.
I have a 2.75" single piston caliper up front and the 1.5" piston Dr Diff/Mustang Cobra rear caliper with just a drum brake combination valve. My front skids before the rear but just barely.
