1980 John Deere 8640 4WD Tractor, 1,000 Hrs Showing, 10.1L 6-Cyl Turbocharged Diesel Engine, 275 HP, Quad-Range Partial Powershift Transmission, 16 Forward Gears & 6 Reverse Gears, 3-Pt, Large 1,000 PTO, 3 Hydraulics, Block Heater, AC/Heat, Radio, 20.8-38 Duals, SN: 005637R