Introduced in 1951, the new LCD-405 COE tractor used the basic Comfo-Vision cab of the other trucks in the International line, but mounted very high over the engine, behind a very short hood. Mechanical specifications paralleled those of the conventional-cab LD-405 tractor: 30000 lb GVW rating and 64000 lb GCW. The standard engine was the 165-hp Cummins HRB-600 6-cylinder diesel but options ranged up to the 300-hp supercharged NHRBS-600. 266-318 hp Hall-Scott gasoline engines were also optional. A Fuller 5-speed transmission was standard but 4 and 10-speed transmissions were optional, along with 3-speed auxiliaries and 2-speed rear axles. In 1953 the LCD-405 was renamed RDC-405. The maximum GCW was increased to 76800 lb. Hall-Scott gasoline and butane-powered versions were split off as the RC-405 model. In 1956 the RDC-405 was renamed the DC-405.
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