1955-59 Chevrolet and GMC truck Hydropower kit is even smaller then the 7" or the 8" vacuum booster in use currently. Generates 1000 to 1800 psi to the calipers and fits a 1.125" bore size master cylinder.
The Hydropower is powered by hydraulic pressure from the power steering pump. It requires 'no vacuum'. This has several advantages. No external vacuum pump required on low vacuum high performance motors. No 'small bore' master required. Firewall and valve cover clearance is increased. Frame mounted clearance is increased. Frame mounted Hydropowers are the same width as a master cylinder, giving additional exhaust clearance. The Hydropower can be fitted any where a vacuum booster will fit.
The Hydropower uses fluid pressure from the existing power steering pump. The average power steering pump puts out from 800psi to 1400psi. The Hydropower uses this pressure that is always circulating through it, to convert to pressure to apply against the master cylinder. The output of the Hydropower is affected by three factors.
1. The pedal ratio. We prefer that the pedal ratio be between 5:1 to 6:1.
2. Pressure output from the pump.
3. Master cylinder bore diameter.
It is imperative that the system be clean. Any residual metallic sediment laying in an old pump or steering box, will be floated up and through the system when the fluid comes through on start up. If any of this sediment lodges in the relief valve of the pump, there will be no pressure from the pump. This will result in hard steering and no power brakes. A filter or a new system is required to maintain any warranty.
Kit includes:
• Hydropower brake booster
• Master cylinder
• Proportioning valve w/bracket and lines
• Mounting brackets
• Limited Lifetime Warranty
Stainless Hose kit with fittings sold separately, Add $440.63. Please specify.
Rubber Hose kit with fittings also available, Add $$377.29.
Note: These are remanufactured Hydropower units. These are not imported units commonly found.
Fits: 55 56 57 58 59 Chevy and GMC truck
