Big cams can wreak havoc in a vehicle with a power brake booster. The bigger the cam, the lower the vacuum number. Inherently, the lower the vacuum number the harder the brake pedal is to press. This doesn’t have to be the case. With our Silent Drive Vacuum Pump, you can remove the engine from the equation and use our stand alone pump to provide the vacuum necessary to properly run a vacuum brake booster. The drawback to a vacuum pump has always been the noise. With the use of our OEM quality rotary style motor, noise is a thing of the past.
We started this 4-part series examining possible vacuum pressure as the cause of a hard brake by picturing a driver's inability to apply his brakes in traffic because the brake pedal is too stiff - requiring an inordinate amount of pushing power. An extreme scenario for sure, but the horror of a hard brake pedal can strike at any time. In power booster equipped vehicles, the issue is more common than you may think. Fortunately, you don’t need a degree in Rocket Science to diagnose and fix the glitches that are hardening your pedal.