The Titan was powered by a 16-cylinder 3,300/3,000 horsepower (2,500/2,200 kW) locomotive engine with a displacement of 10,343 cubic inches (169.49 l) coupled to a EMD AR10-D14 generator. This Electro-Motive Division engine, as the 16-645E4 prime mover, was intercooled and turbocharged. The generator then powered 4 electric traction motors, one at each rear wheel. The Terex featured large 40.00x57 tires made of rubber. It is 66 feet (20 m) long and 22.6 feet (6.9 m) tall; or 56 feet (17.1 m) tall with the dump body raised.
Terex assembled the Titan for Kaiser Steel in its Eagle Mountain iron mine in late 1974. At this mine the Titan suffered from downtime problems but eventually hauled some three-and-a-half million tons of earth until 1978.
In late 1978 it was then brought to Kaiser Steel's Sparwood mine in Canada. In 1980 the mine changed hands as B.C. Resources acquired all of the Kaiser property, and was renamed B.C. Coal. In 1983 the mine was again renamed, to Westar Mining, and the Titan also changed colors from lime green to Westar's blue and yellow. Shortly after, Westar directly purchased the Titan from General Motors, for US$200 thousand and $1 million in spare parts. In the following six years the Titan had an uptime rate of over 70% as it hauled loads of over 360 tons during this time. Westar finally retired the Titan in 1991.
Source, Pics Source