The A-727 is the heavy-duty member of the TorqueFlite family — three forward speeds, planetary gear sets, hydraulic control, the configuration GM and Ford spent two decades catching up to. The case is iron, the parts are oversized, the durability is legendary; well-maintained 727s routinely run hundreds of thousands of miles in service.
Behind the V-code 440 Six-Pack, the 727 is the right pairing: heavy enough to hold the torque, smooth enough to drive every day, friendly enough that the cars are fun in traffic. Most 1970 V-code Super Bees were ordered with the 727 rather than the four-speed manual.