The ATC Terratrac GT-34 is an agricultural crawler tractor produced from 1951 to 1954 by ATC in Churubusco, Indiana, USA. It features a Continental F-140 2.3L 4-cylinder liquid-cooled gasoline engine producing 30 hp (22.4 kW). The tractor has a 3-speed gear transmission with 3 forward and 1 reverse gears and uses a crawler drive system. It is designed with an open operator station and can pull 3 14-inch plows.