The Stovebolt Site Forums The Parking Lot Tons 'o Fun 1 Ton dual reservoir master cylinder?

Napa part # NMC M1974 master cylinder for power brakes. 1.125" bore. The large chamber is for the front brakes. I put this in my '48 3800 truck that has '54 3800 front and rear axles. The push rod hole on the m.c. is deep just like the manual m.c. This is the set up I've had in my truck for 6 years, daily driver. Works great, and NO residual valves, it stops on a dime.