This is a new heavy duty 8" dual power brake booster assembly kit for a Street Rod Truck or Car. This is for a replacement or upgrade to a existing mounting area. Includes proportioning valve kit and 4 residual check valves.

This is a nice kit for listed applications plus any other that fits a 8" dual street rod booster and a corvette disc drum master valve combo and along with the Residual Valve kit this is set up for disc front and drum rear applications. Auto transmission cars only. Frame or firewall mounted even good for street rod truck thru the floor application.

Kit includes:

• 8" zinc plated dual diaphragm brake booster
• 1" bore "Corvette style" master cylinder

• 2 blue 2# residual check valves
• 2 red 10# residual check valves
• Bottom of master mounted PV2 proportioning valve kit

Additionally this includes a pair of residual brake pressure valves. One is the 2 Pound Pressure Valve (Blue) for Front Disc Brakes and one is the 10 pound pressure valve (red) for rear drum brakes. These valves are used with a disc brake application where the master cylinder is located under the floor. When the master cylinder is under the floor, it is usually lower than the calipers. Gravity and vibration can cause brake fluid to leak back to the master cylinder away from the calipers, causing a loss of brake pressure. These valves will act as a one way check valve that prevents this type of bleed-back. Without it, there is a good chance that the brakes will drag or give out completely! These valves are an inexpensive and necessary addition to your brake system. This is for TWO valves, one for the front disc brakes and one for the rear drum brakes.

 8" dual booster + Master Cylinder + 2x) Blue Valves 2x) Red Valves Pv4 bottom kit (20#)