Photos: Kenworth Shows Off its Latest Trucks
T660's specs include a horizontal crossover exhaust system with DPF and CO catalyst hanging on the frame.
T660 tractor's instruments and controls are easy to see and use. Interior is very quiet while underway on nearby freeways.
T880 Super Dump's booster axle adds about 15 feet to the legal wheelbase and 13,000 pounds of gross weight, much of it in payload. This truck has an MX-13 diesel and Eaton UltraShift Plus automated transmission.
Western-style bridge-formula mixer is a copy of T880-McNeilus trucks recently purchased by a ready mix company in Seattle. It'll carry 11 cubic yards of concrete. It has a 430-hp MX-13 and an Allison 4700RDS automatic.
KW T660 lightweight tractor foir bulk hauling weighs 14,200 pounds, though 100 gallons of fuel would push that to about 15,000 -- still slim for a 52-inch sleeper-cab.
Wide-base single wheels and tires save about 350 pounds over duals. A Meritor FueLite 6x2 tandem also reduces weight and driveline friction.
Paccar MX-11 diesel weighs 400 pounds less than a larger MX-13 but with 430 hp and 1,550 lbs-ft, still pulls well.
"Super Dump" as used in Arizona and other western states can legally gross about 75,000 pounds on seven axles and meet the federal Bridge Formula B.