ok Brake experts, help me out, 1980 Malibu , while driving I can hit the brakes and pedal will go down halfway with ease then the pedal gets rock hard and can not push pedal any further , but can not get the car to stop fast not even lock up any brake front or back. what the heck is it. bled brakes front and rear but no change. PO put new calipers , rotors, brake lines , brake shoes, wheel cylinders . can not confirm master or booster is new but look new lol.
