Challenger 1050 VS John Deere 8440 specs comparison
                                         
                                        
                                    
                                
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        Challenger 1050
General Infos| Make | Challenger | 
| Model | 1050 | 
| Country | United states | 
| Production | From 2017 | 
| Price | - | 
| Tractor type | Row Crop tractor | 
| Fuel | diesel | 
| Service repair manual | Challenger 1050 Manual | 
Dimensions, sizes and tires
| AG front tires | 650/65R38 | 
| AG rear tires | 750/75R46 | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 32734 lbs or 14848 kg | 
| Length | 242 inches [614 cm] | 
| Width | 118.2 inches [300 cm] | 
| Height | 140.5 inches [356 cm] | 
| Wheelbase | 130 inches [330 cm] | 
| Ground clearance | 23.6 inches [59 cm] | 
| Turning radius | - | 
| Rear tread size | 78.7 inches | 
| Front tread size | 82.7 inches | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 756.7 ci or 12.4 L | 
| Cylinders | 6 cylinders | 
| Engine power | 517 hp or 385.5 kW | 
| Engine RPM | 1700 (rpm) | 
| Torque | 1770 lb-ft or 2400.1 Nm | Torque RPM | 1450 (rpm) | 
| Fuel type | diesel | 
| Fuel injection | - | 
| Fuel tank size | 211 gal or 798.6 L | 
| Oil capacity | - | 
| Oil change | - | 
| Starter motor | electric | 
| Starter volts | 24 V | 
| Parts And Accessories | Challenger 1050 Parts | 
| Batteries number | 2 | 
| Batteries voltage | 12 V | 
| Battries Amps | - | 
| Cold Amps | - | 
| Ground force | negative | 
| Charging system | alternator | 
| Charging Volts | - | 
| Charging Amps | 320 amps | 
| Trans system | Accu-VT | 
| Trans type | continuously-variable transmission | 
| Trans gears | infinite forward and reverse | 
| Clutch system | - | 
| Wheel drive | 4x4 MFWD 4WD | 
| Final drive | - | 
| Steering | power | 
| Braking system | hydraulic wet disc | 
| Cabin type | Cab standard with air-conditioning | 
| Differentiel lock | - | 
| System | load-sensing | 
| Valves | up to 6 | 
| Pump flow | 58 gpm or 219.5 lpm | 
| SVC flow | - | 
| Steering flow | - | 
| Tank capacity | - | 
| Hydraulic pressure | - | 
| Max flow | - | 
| Drawbar type | - | 
| Claimed power | - | 
| Drawbar horsepower | 413.3 hp or 308.2 kW | 
| Fuel consumption | 23.8 gal/hour or 90.1 l/hour | 
| Pulling power | 35765 lbs or 16223 kg | 
| Claimed power | 453 hp or 337.8 kW | 
| Real power | 484.6 hp or 361.4 kW | 
| Engine @RPM | - | 
| PTO Clutch | - | 
| Rear PTO | independent | 
| Rear PTO RPM | 1000 (rpm) | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | 23.6 gal/hour or 89.3 l/hour | 
| Hitch system | - | 
| Rear hitch | IV/IVN | 
| Rear hitch lift | 18631 lbs or 8451 kg | 
| Front hitch | - | 
| Front hitch lift | - | 
                                        
                                    
                                                                            
                                        
                                    
                                                                            
                                    
                                                                                        John Deere 8440
General Infos| Make | John Deere | 
| Model | 8440 | 
| Country | United states | 
| Production | From 1979 Until 1982 | 
| Price | - | 
| Tractor type | Four wheel Drive (4WD) tractor | 
| Fuel | diesel | 
| Service repair manual | John Deere 8440 Manual | 
Dimensions, sizes and tires
| AG front tires | 18.4-34 | 
| AG rear tires | 18.4-34 | 
| Lawn front tires | - | 
| Lawn rear tires | - | 
| Indus front tires | - | 
| Indus rear tires | - | 
| Weight | 26,590 lbs or 12061 kg | 
| Length | 223.5 inches [567 cm] | 
| Width | - | 
| Height | 126.6 inches [321 cm] | 
| Wheelbase | 125 inches [317 cm] | 
| Ground clearance | 19.4 inches [49 cm] | 
| Turning radius | - | 
| Rear tread size | 63 to 130 inches | 
| Front tread size | 63 to 130 inches | 
| Turning radius | - | 
Horsepower and engin specs
| Engine capacity | 466 ci or 7.6 L | 
| Cylinders | 6 cylinders | 
| Engine power | 215 hp or 160.3 kW | 
| Engine RPM | 2100 (rpm) | 
| Torque | - | Torque RPM | - | 
| Fuel type | diesel | 
| Fuel injection | - | 
| Fuel tank size | 156 gal or 590.5 L | 
| Oil capacity | 22 qts or 20.8 L | 
| Oil change | - | 
| Starter motor | - | 
| Starter volts | 12 V | 
| Parts And Accessories | John Deere 8440 Parts | 
| Batteries number | 2 | 
| Batteries voltage | 6 V | 
| Battries Amps | - | 
| Cold Amps | 850 | 
| Ground force | negative | 
| Charging system | alternator | 
| Charging Volts | - | 
| Charging Amps | 90 amps | 
| Trans system | John Deere Quad-Range | 
| Trans type | partial power shift | 
| Trans gears | 16 forward and 6 reverse | 
| Clutch system | hydraulic wet disc | 
| Wheel drive | 4x4 articulated 4WD | 
| Final drive | - | 
| Steering | articulated power | 
| Braking system | hydraulic wet disc | 
| Cabin type | Cab standard | 
| Differentiel lock | hydraulic front and rear | 
| System | closed center | 
| Valves | 2 | 
| Pump flow | 33 gpm or 124.9 lpm | 
| SVC flow | - | 
| Steering flow | - | 
| Tank capacity | 40 gal or 151.4 L | 
| Hydraulic pressure | - | 
| Max flow | - | 
| Drawbar type | - | 
| Claimed power | - | 
| Drawbar horsepower | 160.58 hp or 119.7 kW | 
| Fuel consumption | 11.2 gal/hour or 42.4 l/hour | 
| Pulling power | 25,383 lbs or 11513 kg | 
| Claimed power | 175 hp or 130.5 kW | 
| Real power | 179.83 hp or 134.1 kW | 
| Engine @RPM | - | 
| PTO Clutch | - | 
| Rear PTO | independent | 
| Rear PTO RPM | 1000 (rpm) | 
| Front PTO | - | 
| Front PTO RPM | - | 
| Mid PTO | - | 
| Mid PTO RPM | - | 
| Fuel consumption | 11.3 gal/hour or 42.8 l/hour | 
| Hitch system | - | 
| Rear hitch | III | 
| Rear hitch lift | 8545 lbs or 3876 kg | 
| Front hitch | - | 
| Front hitch lift | - | 
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Useful links and guides ....
- Challenger provided us with the latest version of its 1050 service repair manual
 - Find All mechanical and electrical parts and accessories of Challenger 1050 farm-tractor here
 
- Get your John Deere 8440 manual book version
 - Cabine, electrical And mechanical parts for John Deere 8440 farm-tractor here