A line is then routed from the intake manifold to the brake booster, through a one-way check valve. The engine's vacuum acts on the diaphragm, providing assistance when the brake pedal is depressed.

A one-way check valve prevents this atmospheric pressure ... Interestingly, a vacuum leak in the booster can translate to a poorly running engine since its system of vacuum lines is all ...

It matters to your brake vacuum booster. If you are running disc/drum ... You need inline residual check valves in the front and rear brake lines too 2-pound for discs and 10-pound for drums.

The vacuum pressure ... of your car like the brake booster, distributor vacuum advance, and positive crankcase ventilation (PCV) and exhaust gas recirculation (EGR) valves. A vacuum leak generally ...

I have a 355 small-block Chevy in my 1971 Nova and just swapped on a set of used aluminum heads. I was told the heads have 180cc intake runners, 64cc chambers, 65cc exhaust ports, and 2.02/1.60 ...