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Price: $169.86
This is a Brand new 8" Zinc brake booster with master cylinder, mounting brackets rod and clevis, and Disc/Drum Prop Valve kit for a 1955 1956 1957 Chevy Car (150 - 210 - Bel Air - Nomad). This 8" booster is ideal for most small to mid size street rods and customs. The 4 port master cylinder in this kit has 1" Bore. Rod may need to be shortened for some applications.
The proportioning valve has a zinc finish. This valve is also call 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.
Package Includes:
- Zinc 8" Power Brake Booster
- Zinc 4 port (9/16" and 1/2") Master Cylinder with 1" Bore
- Disc Drum Proportioning Valve with Side Mounting Kit
- Mounting Brackets/Rod/Clevis for 1955-1957 Chevy Car
Professional Installation is Highly Recommended (No Instruction Included)
BCK047 swap Brkts/rod for 7800Z Kit