skidmarkSS

iTrader: (3)

The brake system on my 87SS in the sig has stock brakes in the front and LS1 FBody brakes in the rear,i recently changed the disc/drum proportioning valve to a disc/disc prop valve and now the fronts locked up after pumping the pedal.i am getting plenty of bleed pressure from the front(locked up) but none in the rear(unlocked).i have the stock 15/16 bore disc/drum master in the car still and am looking into a 1' bore disc/disc master to clear this up.i will also put the old prop valve on to see if pressure comes back to the rear or not.

skidmarkSS

iTrader: (3)

i bled the brakes and now i am getting no bleed pressure in the rears,maybe needs a new master??car has the stock disc/drum master,maybe it is not working properly with a disc/disc proportioning valve??