Farmall A: Has a mechanical lift system No hydraulic block with lift arms under the gas tank No Touch Control hydraulics 16.3 horsepower on the drawbar and 18.3 on the belt 21 inches of clearance Farmall Super A: Has a hydraulic block with lift arms under the gas tank Has Touch Control hydraulics 13 horsepower on the drawbar and 16 horsepower on the PTO 28 inches of clearance