S1600: 1987 - 1987 : L6 7.6L 466 CID Turbo Diesel ... w / International V8 551 (9.0L) Engine: KENWORTH TRUCKS: 13-210 : 1988 - 1989: ... L6 5.9L 360 CID International ... The S1600, S1700, S1800, and S1900 were introduced in 1979. Replacing the International Harvester Loadstar model line, the model was produced in a number of configurations, with single and tandem rear axles, 4x4/6x6 drive options, and gasoline and diesel engines. International 4900: A Heavier-Duty Single Axle Dump. Dump Trucks for sale This 1990 International 4900 single axle dump has a 6-cylinder DT466 diesel engine capable of producing 275 hp. The engine has only 25,000 miles. This 4900 has a 4X2 drive line, reliable automatic transmission, air brakes and ice cold A/C.