This page provides a detailed comparison of the specifications for the John Deere 6630 Premium and the White Workhorse 145.
| John Deere 6630 Premium | White Workhorse 145 | |
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| Engine | ||
| Engine Manufacturer | John Deere | CDC-Cummins |
| Engine Model | 6068HL480 | - |
| Engine Cooling Type | Liquid-cooled | liquid-cooled |
| Engine Fuel Type | Diesel | Diesel |
| Engine Induction Type | Turbocharged | Turbocharged aftercooled |
| Engine Cylinders | 6 | 6 |
| Engine Displacement Value | 414 ci (6.8 L) | 359 ci (5.9 L) |
| Engine Rated Rpm | 2300 | 2200 |
| Engine Power Output Value | 125 hp (93.2 kW) | - |
| Transmission | ||
| Transmission Type | Partial Power Shift | partial power shift |
| Transmission Forward Gears | 24 | 18 |
| Transmission Reverse Gears | 24 | 6 |
| Dimensions | ||
| Length Value | 168.9 | 175 |
| Width Value | 91.2 | - |
| Operating Weight Value | 11530 lb (5230 kg) | 14665 lb (6652 kg) |
| Miscellaneous | ||
| Chassis | 4x4 MFWD 4WD | - |
| Drive Type | MFWD 4WD | - |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Type | Rear Type IIIN | - |
| Hitch Category | Category 3 | III/II |
| Hitch Position | Rear | - |
| Hydraulic System Type | Load-sensing pressure-flow compensating (PFC) | closed center |
| Starter Type | Electric | 12-volt |
