rear discs get hot

[painterdude32]

Hey guy's just trying to figure out my brake problem. The rear discs are draging ang getting hot. I'm aware that I need to remove the residual pressure valve, but I don't know if it's in the master cylinder or the distribution block on an 87 gm g-body. Can't seem to find any info on this. I have a proportioning valve to control the front to rear bias, but the old drums required 10psi residual pressure. How do I reduce this down to 2psi? Any advise would be much appreciated.

[HILROD]

You don't need a residual pressure valve unless the master cyl. is mounted lower than the brakes. Like a street rod under the floor. If you use one on a normal firewall mounted setup it'll make the brakes drag. But you already knew that! Remove the valve. A residual valve is not a replacement for the stock junction block. FRANK. EDIT- I re-read you post if the car has the stock brake system, check for the parking brakes dragging. Also make sure the brake pedal is releasing all the way back.

[Madspeed]

Better yet take the prop valve out and throit in the trash
get a wilwood adjustable brake pressure vavle and install it in the rear brakes adjust it untill the fronts lock first

and yes some masters do have a residual P valve in the master