1967-72 Chevy C10 Truck Suburban Chrome Brake Booster Master Cylinder Disc Drum

Professional Installation is Highly Recommended (No Instructions Included)This is a new Chrome 8" Power Brake Booster, Master Cylinder, and Proportioning Valve for 1967-72 Chevy and GMC trucks with disc brakes in front and drum brakes in rear. Kit includes:• Chrome 8" Dual Diaphragm Power Brake Booster• Chrome 1" Bore Smooth Flat Ball Milled Top Master Cylinder with 9/16" & 1/2" Ports on both sides• Chrome Disc/Drum Proportioning Valve with Chrome Driver Side Mounting Bracket and Hard Lines• Chrome Firewall Mounting BracketThe proportioning valve is also called a combination valve, as it performs all of the necessary valving functions with a disc brake conversion. These functions include the following:Proportioning:As more force is applied to the brakes and the car begins to lean forward, less braking force is needed in the rear. This valve decreases the pressure to the rear, preventing lock up.Metering:Metering is used in the front disk brake portion in the disc/drum system to delay application of the front discs allowing the slower reacting drum brakes to catch up. This provides rear stability on wet surfaces and helps prevent front pad wear. There is no metering function with the disc/disc setup.Residual Pressure:Drum Brakes require residual pressure of 10 lbs. to be held in the line. This pressure keeps the brake shoes close to the drums giving you a more firm pedal feel. The disc/disc setup does not require this pressure.System Failure Switch:This valve has a system failure switch that will alert you when half of your braking system is not working properly.For Disc/Drum ApplicationsApplications include: 1967 1968 1969 1970 1971 1972 Chevy and GMC C10 Pickup, C10 Suburban, C20 Pickup, C20 Suburban, C30 Pickup, C30 Suburban, 1967 Chevy and GMC Panel Truck.Note: Instructions not included. Professional installation is recommended.Check out my ebay store for more quality automotive

accessories. New items are being added daily.1967 1968 1969 1979 1971 1972 67 68 69 70 71 72 Chevy GMC Pickup Truck