Does anyone know if there is a difference between mechanical brake drums and Hydraulic, I found two rear drums and when compared to the ones I already have on my A they Stand a little taller when placed on the floor, I have hydraulic on my car but was wondering if the ones I found may be for a mechanical system. Would they be interchangeable?
Rear brake drums
- Thread starter Talon one
- Start date
Kurt in NJ
Well-known member
depends on what was done to convert to hydraulic
rotorwrench
Well-known member
Ford hydraulic brakes used 12-inch drums from 1939 through 1948. The 1939 drums were wide five design. When changing from mechanicals to hydraulics, most folks use the backing plates to fit the 12-inch Lockheed brakes and the associated drums. There are always exceptions depending on the person that did the alteration and what other components may have been utilized.