This page provides a detailed comparison of the specifications for the John Deere 6220 and the New Holland 6640.
| John Deere 6220 | New Holland 6640 | |
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| Engine | ||
| Engine Manufacturer | John Deere | Ford |
| Engine Model | PowerTech 4045TL071 | Genesis |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Diesel | Diesel |
| Engine Induction Type | Turbocharged | Natural Aspiration |
| Engine Cylinders | 4 | 4 |
| Engine Displacement Value | 276 ci (4.5 L) | 304 ci (5.0 L) |
| Engine Rated Rpm | 2300 | 2200 |
| Engine Power Output Value | 90 hp (67.1 kW) | 91 hp (67.6 kW) |
| Transmission | ||
| Transmission Type | Fully synchronized | SynchroShift |
| Transmission Forward Gears | 12 | 12 |
| Transmission Reverse Gears | 4 | 12 |
| Dimensions | ||
| Length Value | 162.6 | 162 |
| Width Value | 61.4 | - |
| Operating Weight Value | 8674 lb (3934 kg) | 8135 lb (3690 kg) |
| Miscellaneous | ||
| Chassis | 4x2 2WD | - |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Category | II | Category 3 |
| Hitch Position | Rear | - |
| Hitch Capacity Value | 4045 lb (1835 kg) | 4200 lb (1905 kg) |
| Hydraulic System Type | Pressure flow compensated | Open center |
| Operator Station Type | Two-post ROPS | Open |
| Starter Type | Electric | Electric |
