Caterpillar’s CT660 vocational truck first in Class 8 line

Kerry Clines

June 25, 2011

Caterpillar say its new CT660 vocational truck with set-back axle configuration is the first model in a full line of Class 8 vocational trucks. Engine options include the Cat CT11, CT13, and CT15, which provide horsepower ratings from 330 to 550 and peak torque ratings from 1,450 to 1,850 pound-feet. The engines are designed to yield optimum horsepower/torque combinations, while providing customers with the flexibility to match power and performance to the specific application and operating condition. The engines combine an advanced exhaust-gas-recirculation system with a high-pressure, common-rail fuel system, a precision intake air management system, and electronic controls to provide a blend of high performance, low emissions, and fuel economy. The company says the compact Grapite engine block reduces weight by as much as 500 pounds compared with conventional all-iron designs, and the aluminum-alloy cab weighs 250 pounds less than conventional steel cabs. The Cat CX31 automatic transmission option with six forward speeds and one reverse speed features heavy-duty clutches and gear sets that allow full-power shifts. The company says

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