The Stovebolt Site Forums The Parking Lot Big Bolts How to adapt to dual reservoir cylinder?

Hi 49TT, welcome. If your original brake system did not have a vacuum boost and you install a new master cylinder with the exact same piston bore and stroke as the original, the brakes should feel ok. If the truck had/has a booster, you will want to incorporate one into the new system. My '57 2 ton has a divorced booster, Bendix HydoVac. Without the booster in the system it takes much more peddle force to control the braking. Just like a modern truck or car, the brakes will work manually if the engine is not running.