1980 John Deere 8640 4WD Tractor, 8,983 Hrs Showing, 275 Hp, 10.1L Turbocharged 6-cylinder Diesel Engine, Partial PowerShift Transmission, 16 Forward Gears & 6 Reverse Gears, 3-Pt Quick Hitch, Large 1000 PTO, 3 Hydraulics, AC/Heat, Radio, 20.8-38 Front & Rear Dual Tires, SN: 8640H 003464R