Specifications include, but are not limited to: A. General 1) Conventional Cab 2) Roll-off type for hauling 40 cubic yard open top refuse containers 3) Gross vehicle weight of 72,000 lbs. 4) Frame Rails: 12.250 inches with 120,000 PSI Yield Strength B. Diesel Engine 1) Minimum Inline 6 Cylinder Configuration 2) At least 485 HP at 1950 RPM, developing at least a torque ration of 1850 lb-ft torque at 1150 RPM 3) 2000 RPM governed speed 4) Engine compression brake required 5) 1500 Watt 120 Volt engine heater with weather proof plug 6) Engine fan manual override switch C. Suspension 1) Front: 20,000 lb. capacity parabolic taper leaf type with shock absorbers 2) Rear, tandem: 46,000 lb. capacity , walking beam type with rear suspension springs