The A466 was replaced in 1962 with the "A727" (later renamed "36RH" and "37RH"), with a one-piece aluminum case to reduce weight by about . This was initially referred to in consumer-oriented publications as the "TorqueFlite 8" to differentiate it from the A904. The A727 incorporated a parking pawl, with the sole exception of the 1962 Chrysler and Dodge 880 version, which had an extension-mounted drum brake. Compared to the early cast-iron transmissions, many and various internal improvements were featured, and it used a or torque converter. The heavier-duty A727 Torqueflites became — and remain — wildly popular for drag racing, off roading, and monster truck applications because of their controllability, reliability, ease/cheapness of repair and brute strength. Note there are unique bellhousing bolt patterns for the small block "A" and big block "B" engine versions of this transmission, and for the AMC/Jeep applications.