Speedway Motors GM Disc Drum Brake Proportioning Valve with Hard Lines for 1/2-20 and 9/16-18 Master Cylinder Outlets, OEM Style Brass Block Disc Front Drum Rear Systems

These proportioning valves are similar to what GM used on many cars in the 70s. They are non-adjustable and may require an adjustable valve in the rear brakes (if needed). Block incorporates metering (for front brakes) and proportioning (for rear brakes) into one unit. For use with front disc, rear drum brake systems. Includes hard lines to connect to a master cylinder with 1/2"-20 and 9/16"-18 outlets. Item Details For M/C with 1/2"-20 and 9/16"-18 outlets.Bottom Front Port: 3/8 "-24 IFF threads - goes to one front brake Top Front Port: 3/8 "-24 IFF threads - goes to one front brake Middle Top Port: 1/2 "-20 IFF threads - comes from master cylinder Rear Top Port: 7/16 "-24 IFF threads - comes from the master cylinder Rear Most Port: 9/16 "-18 IFF threads - goes to rear brakesBottom Front Port: 3/8 "-24 IFF threads - goes to one front brake Top Front Port: 3/8 "-24 IFF threads - goes to one front brake Middle Top Port: 1/2 "-20 IFF threads - comes from master cylinder Rear Top Port: 7/16 "-24 IFF threads - comes from the master cylinder Rear Most Port: 9/16 "-18 IFF threads - goes to rear brakes

• OEM-Style Proportioning Valve: Non-adjustable design modeled after 1970s GM applications to provide a factory-correct appearance
• Integrated Brake Control: Combines front brake metering and rear brake proportioning into a single compact valve body
• Disc/Drum Compatibility: Designed for disc front and drum rear brake systems on a wide range of vehicles
• Hard Line Connections Included: Comes with hard lines for master cylinders using 1/2"-20 and 9/16"-18 outlets for easier installation
• Port Configuration Details: Features two 3/8"-24 IFF front outlets, one 9/16"-18 IFF rear outlet, and multiple master cylinder inlet ports for proper routing