7500, Heavy Duty Trucks - Farm Trucks / Grain Trucks, , , 1979 GMC 7500 with air brakes , 427 gas engine, 5 speed transmission, 2 speed rear end, 315/75 x 22.5 tires on front axle. 10.0 x 20 tires on rear, air ride tag with spring lift. 20 x 96 wide Kann aluminum grain body with 60 sides, 3 pc. swing out rear endgates. Omaha Standard Olympic 180 twin cylinder stable lift hoist. Package price $11,500.00, Horse Power, Suspension, Wheels, Wheel Base, , Axle, Ratio,