The Allis Chalmers 7580 is a four-wheel drive (4WD) tractor produced from 1976 to 1981. Built in West Allis, Wisconsin, USA, a total of 1610 units were made. It features a powerful 7.0L 6-cylinder turbocharged intercooled diesel engine, delivering an estimated 206.7 hp engine power. The tractor includes a 20-speed partial power shift transmission with Power Director, hydrostatic power steering, hydraulic wet disc brakes, and an Acousta cab with heat and air-conditioning. It has a closed center hydraulic system with 3 to 4 valves and a pump flow of 23 gpm. The tractor's dimensions include a 126 inch wheelbase, 225 inch length, and weighs approximately 23,100 to 23,510 lbs. It is equipped with various tire options and an independent 1000 rpm rear PTO. The 7580 is known for its robust build and performance in heavy-duty farming applications.