This page provides a detailed comparison of the specifications for the Challenger MT945B and the John Deere 8450.
| Challenger MT945B | John Deere 8450 | |
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| Engine | ||
| Engine Manufacturer | Caterpillar | John Deere |
| Engine Model | C15 ACERT Tier III | - |
| Engine Cooling Type | Liquid | Liquid-cooled |
| Engine Fuel Type | Diesel | Diesel |
| Engine Induction Type | Turbocharged / Air-to-Air Aftercooled | Turbocharged and intercooled |
| Engine Cylinders | 6 | 6 |
| Engine Displacement Value | 928 ci (15.2 L) | 466 ci (7.6 L) |
| Engine Rated Rpm | 2100 | 2100 |
| Engine Power Output Value | 416 hp (310.4 kW) | 225 hp (167.8 kW) |
| Transmission | ||
| Transmission Type | Full powershift | Partial power shift |
| Transmission Forward Gears | 16 | 16 |
| Transmission Reverse Gears | 4 | 6 |
| Dimensions | ||
| Length Value | 298 | 223.5 |
| Width Value | 200 | - |
| Operating Weight Value | 50495 lb (22904 kg) | 29150 lb (13222 kg) |
| Miscellaneous | ||
| Chassis | 4x4 | 4x4 articulated 4WD |
| Drive Type | 4WD | 4WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Type | IVN/III Opt | Three-Point Hitch |
| Hitch Category | - | Category 3 |
| Hitch Position | Rear | - |
| Hitch Capacity Value | 19500 lb (8845 kg) | 9262 lb (4201 kg) |
| Hydraulic System Type | Closed center PFC | Closed-center constant pressure |
| Operator Station Type | Cab | - |
| Starter Type | - | 12 volts |
