The Ford 640 is a 2WD utility tractor form the 600 Series. This tractor was  manufactured by Ford in Highland Park, Michigan, USA from 1964 to 1967. The Ford 640 is equipped with a 2.2 L (134.0 cu·in) four-cylinder gasoline/LP-gas engine and an unsynchronized gear type  transmission with 4 forward and 1 reverse gear and dry disc clutch.
The Ford 640 utility tractor used the Ford EAE Red Tiger engine. It is a 2.2 L, 2,196 cm2, (134.0 cu·in) four-cylinder natural aspirated gasoline/LP-gas engine with 87.0 mm (3.43 in) of the cylinder bore and 91.0 mm (3.58 in) of the piston stroke. The compression ratio rating is 6.6:1.
The Ford 640 is equipped with manual or power assist (option) steering, differential mechanical expanding shoe brakes, open operator station, and 41.6 liters (11 US gal.; 9.2 Imp. gal) fuel tank.
Ford 600 Series tractor variants:
- 620 No PTO, hydraulics, or 3-point hitch
 - 630 No PTO
 - 640 Four-speed
 - 650 Five-speed
 - 660 Five-speed, live PTO
 
Ford 640 Specifications
| General Specifications | |
| Model | Ford 640 | 
| Length | 3,080 mm (121.3 in) | 
| Width | 1,640 mm (64.6 in) | 
| Height | 1,490 mm (58.7 in) | 
| Wheel base | 1,910 mm (75.2 in) | 
| Ground clearance | 530 mm (20.9 in) | 
| Weight | 1,370 kg (3,020 lbs) | 
| Fuel tank capacity | 41.6 liters (11 US gal.; 9.2 Imp. gal) | 
| Battery | 6V | 
| Cabin type | Open operator station | 
| Engine | |
| Engine model | Ford EAE Red Tiger | 
| Engine type | Four-stroke, liquid-cooled, inline | 
| Cylinders | 4 | 
| Fuel type | Gasoline/LP-gas | 
| Displacement | 2.2 L, 2,196 cm2, (134.0 cu·in) | 
| Bore and stroke | 87.0 mm X 91.0 mm (3.43 in X 3.58 in) | 
| Compression ratio | 6.6:1 | 
| Horsepower | – | 
| Starter | Electric | 
| Oil capacity: | 4.7 L (5 US. qt, 4.1 Imp. qt.) | 
| Coolant capacity: | 14.2 L (15 US. qt, 12.5 Imp. qt.) | 
| Transmission and chassis | |
| Chassis | 4×2 2WD | 
| Steering type | Manual or power assist (option) | 
| Brakes | Differential mechanical expanding shoe | 
| Transmission model | – | 
| Transmission type | Unsynchronized gear with dry disc clutch | 
| Gears | 4 forward and 1 reverse | 
| Speed | Forward: 22.0 kmh (13.7 mph) Reverse: 6.9 (4.3 mph) | 
| Tires | |
| Front tires | Ag: 5.50-16 | 
| Rear tires | Ag: 11-28 | 
| Three-Point Hitch | |
| Category | I | 
| Control type | – | 
| Lift capacity (at ends) | 567 kg (1,250 lbs) | 
| PTO (Power take-off shaft) | |
| Rear PTO type | Transmission | 
| Rear PTO speed | 540 rpm | 
| Hydraulic system | |
| Hydraulic type | – | 
| Hydraulic capacity | 8.5 L (2.2 US. gal, 1.9 Imp. gal.) | 
| Steering flow | 6.5 gpm (24.6 lpm) | 

Years of manufacture for the 640 were 1955 to 1957 (not 1964 to 1967). 1954 was the NAA and 1953 was the Jubilee.