1995 MACK CH613, Heavy Duty Trucks - Day Cab Trucks, Conventional Cab, Mack E7 Diesel Engine, 400 Horsepower, 48,000 lbs. Rear Axle Weight, 20,000 lbs. Pusher Axle Weight, 13,600 lbs. Front Axle Weight, 13 Speed Manual Transmission, Air Ride, ( 3 ) Rear Axles.