This is a CUSTOMER RETURNED Hydro-Boost Power Brake Booster, Master Cylinder, and Proportioning Valve for 1964-72 GM A-Body Vehicles with disc brakes in front and disc brakes in rear.  Part # HYDRO-BOOST, 3512, PV4, 650Z RETURN MIKE.

***CUSTOMER BIT OFF MORE THAN THEY COULD CHEW AND RETURNED.  PACKAGING HAS BEEN OPENED, BUT PARTS HAVE NOT BEEN INSTALLED OR USED AND ARE STILL LIKE NEW...SAVE $$$

Hydro-boost systems are capable of delivering significantly greater pressure through a braking system than a vacuum boost. In some cases, you can more than double the pounds of pressure being distributed to your brakes simply by opting for hydro-boost.

This quality Hydro-Boost hydraulic brake assist power booster fits vehicles such as 1964-72 Chevy Chevelle, Malibu and El Camino to name a few, and generates up to 1800psi of line pressure to the brake calipers. 

It is fitted with a cast iron "Corvette style" Master Cylinder and disc / disc Proportioning Valve. This kit is powered by hydraulic line pressure from the power steering pump. Firewall and valve cover clearance is equivalent to a 7" diameter vacuum booster and the included firewall mounting brackets are correct for 1964-72 GM A-body applications.

The average power steering pump puts out from 800psi to 1400psi line pressure. The Hydro-Boost uses this pressure to “boost” the force on the master cylinder's brake fluid and therefore apply more force to the brake calipers (and subsequently more force on the rotors with the brake pads). This greatly improves stopping performance and driver feedback. This hydraulic power booster can be easily installed on an existing vacuum booster vehicle or used to convert a manual brake setup to power.

For 4 Wheel Disc Disc Applications

Applications include GM A Body: 1964 1965 1966 1967 1968 1969 1970 1971 1972 Chevy Chevelle, Malibu, El Camino, Buick Skylark, Oldsmobile Cutlass

Kit includes:

• Hydraulic Brake Assist Power Booster
• 1-1/8" Bore Cast Iron "Corvette Style" Master Cylinder
• Brass Disc/Disc Proportioning Valve
• Firewall Mounting Brackets

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