SPECS / COMPARISON
Allis Chalmers WD vs Ford 640
A detailed comparison of the Allis Chalmers WD and the Ford 640. Click a model name to view its full specifications.
Weight
Allis Chalmers WD1590.0 kg (3505.3 lbs)
Ford 6401370.0 kg (3020.3 lbs)
| Specification | Allis Chalmers WD Agricultural Tractors | Ford 640 Agricultural Tractors |
|---|---|---|
| Tractor Type | Farm Tractor | Utility Tractor |
| Horsepower | 19.4 kW (26.0 HP) | — |
| Weight | 1590.0 kg (3505.3 lbs) | 1370.0 kg (3020.3 lbs) |
| Transmission Type | Non-synchronized gear | Unsynchronized gear with dry disc clutch |
| Length | 322.0 cm (126.8 in.) | 308.0 cm (121.3 in.) |
| Years Made | 1948-1953 | 1964-1967 |
| Engine Model | Allis Chalmers | Ford EAE Red Tiger |
| Engine Type | 4-stroke, liquid-cooled, inline | 4-stroke, liquid-cooled, inline |
| Fuel Type | Gasoline | Gasoline/LP-gas |
| Cylinders | 4 | 4 |
| Displacement | 3293 cc (201.0 cu in.) | 2196 cc (134.0 cu in.) |
| Bore | 10.21 cm (4.02 in.) | 8.71 cm (3.43 in.) |
| Stroke | 10.21 cm (4.02 in.) | 9.09 cm (3.58 in.) |
| Rear PTO Type | Transmission or live | Transmission |
| Rear PTO Speed | 540 RPM | 540 RPM |
| Compression Ratio | 5.75:1 | 6.6:1 |
| Battery | 6 V | 6 V |
| Starter | Manual or electric | Electric |
| Height | 207.0 cm (81.5 in.) | 149.0 cm (58.7 in.) |
| Wheelbase | 223.0 cm (87.8 in.) | 191.0 cm (75.2 in.) |
| Fuel Tank Capacity | 56.8 l (15.0 gal) | 41.6 l (11.0 gal) |
| Coolant Capacity | 13.2 l (3.5 gal) | 14.2 l (3.8 gal) |
| Hydraulic Capacity | 4.7 l (1.2 gal) | 8.5 l (2.2 gal) |
| Gears | 4 forward and 1 reverse | 4 forward and 1 reverse |
| Chassis | 4×2 2WD | 4×2 2WD |
| Max. Travel Speed | 3.6 km/h (Forward: 9.8 MPH (15.7 km/h) Reverse: 2.2 MPH) | 6.9 km/h (Forward: 13.7 MPH (22.0 km/h) Reverse: 4.3 MPH) |
| Brakes | Manual external compression band type | Differential mechanical expanding shoe |
| Drawbar Category | Single Hitch Point | I |
| Cabin Type | Open operator station | Open operator station |
| Steering Type | Manual worm and horizontal sector | Manual or power assist |
| Front Tires | Ag: 5.50-16 | Ag: 5.50-16 |
| Rear Tires | Ag: 11-28 | Ag: 11-28 |
| Hydraulic Type | Open center | — |
| Working Pressure | 82.7 bar (1200.0 psi) | — |
| Valves | 1 | — |
| Lift Capacity | — | 567.0 kg (1250.0 lbs) |
| Ground Clearance | — | 53.0 cm (20.9 in.) |
| Oil Capacity | — | 4.7 l (1.2 gal) |
| Steering Flow | — | 24.6 LPM (6.5 GPM) |
Values come from the manufacturer-sourced model files; empty cells mean the property is not published for that model. No performance ranking is applied.