John Deere 4450
Power
158 hp
Production
1983-1988
Engine
Turbocharged diesel, 6-cylinder
Transmission
John Deere Quad-Range
Weight
15400 lbs*Two-wheel drive tractor with cab and Power Shift. [6985 kg]
Drive
2WD/4WD
From the same series:
Introduction
John Deere 4450 Row-Crop Tractor
The John Deere 4450 is a row-crop tractor produced between 1983 and 1988 in Waterloo, Iowa. As the best-selling model within the 50-series line, it represents a significant chapter in the manufacturer's agricultural machinery history, integrating the innovative Caster/Action front-wheel drive system.
Engine and Performance
The tractor is powered by a 466 cubic inch (7.6 L) 6-cylinder turbocharged diesel engine. It delivers 158.2 hp (118.0 kW) at a rated speed of 2200 RPM. The engine features a liquid cooling system and a dry air cleaner, with a compression ratio of 15.8:1.
Transmission and Drivetrain
Users could choose between two transmission systems: the 16-speed partial power shift Quad-Range or the 15-speed full power shift. Both options utilize a hydraulic wet disc Perma-Clutch. The drivetrain is available in either two-wheel or four-wheel drive, with the latter benefiting from the Caster/Action system that allows the front wheels to angle up to 13 degrees for improved turning.
Hydraulics and Hitch
The 4450 employs a closed-center hydraulic system with a pump flow capacity of 26.5 gpm (100.3 lpm) at a pressure of 2277 psi (157.0 bar). The rear hitch is a category IIIN/II type equipped with lower-link draft sensing, offering a rear lift capacity of 6294 lbs (2854 kg).
Mechanical and Operator Environment
Standard equipment includes the Sound-Gard cab, providing an enclosed environment for the operator. Mechanical features consist of power steering, hydraulic wet disc brakes, and an inboard planetary final drive system. An optional four-post Roll-Gard ROPS was also available for specific operational requirements.
Conclusion
With an operating weight of 15,400 lbs (6985 kg) in its 4WD configuration, the John Deere 4450 is engineered for heavy-duty field work. Its combination of high power output, versatile transmission options, and advanced hydraulic capacity made it a highly reliable and popular choice for large-scale row-crop operations during the 1980s.
Videos
Production Information of John Deere, 4450
- Row-Crop tractor
- The John Deere 4450 was the best-selling model of the entire 50-series line of tractors. The 4450 alone accounted for 20% of sales in the line. John Deere introduced its Caster/Action front-wheel drive system on these tractors. By enabling the tractors' front wheels to angle up to 13-degrees, sharper turn angles and larger front tires could be used.
- Built in Waterloo, Iowa, USA
| Manufacturer | John Deere |
|---|---|
| Manufacturer(optional) | $67,009 (1983 Power Shift Cab 4WD ) |
| Original price | $46,670 (1983 Quad-Range ROPS 2WD ) |
Dimension and Tires Information of John Deere, 4450
| 2WD Wheelbase | 106.7 inches [271 cm] |
|---|---|
| 4WD Length | 164.1 inches [416 cm] |
| Height | 116.5 inches [295 cm] |
| 2WD Length | 154.1 inches [391 cm] |
| Ground clearance | 15.75 inches [40 cm] |
| 4WD Wheelbase | 105.3 inches [267 cm] |
| Width | 96 inches [243 cm] |
| Width(optional) | 109 inches (optional axle) [276 cm] |
| Width(optional) | 119 inches (optional axle) [302 cm] |
| Operating weight | 15400 lbs [6985 kg] |
| Shipping weight | 12745 lbs [5781 kg] |
| Rack-and-pinion rear axle | 3.62 by 113 inches [91 by 2870 mm] |
| Rack-and-pinion rear axle | 3.62 by 109 inches [91 by 2768 mm] |
| Rack-and-pinion rear axle | 3.62 by 96 inches [91 by 2438 mm] |
Two-wheel drive tractor with cab and Power Shift.
| 2WD Standard tires (ag) | Front: 10.00-16. Rear: 18.4-38 |
|---|---|
| 2WD Standard tires (ag)(optional) | 20.8-38 |
| 2WD Standard tires (ag)(optional) | 16.9-38 |
| 4WD Standard tires (ag) | Front: 14.9-26. Rear: 18.4-38 |
| 4WD Standard tires (ag)(optional) | 18.4R42 |
| 4WD Standard tires (ag)(optional) | 20.8R38 |
| Ag rear | 23.1-34 |
Engine Specifications of John Deere, 4450
- Liquid-cooled
- 6-cylinder
- Turbocharged diesel
| Air cleaner | Dry |
|---|---|
| Firing order | 1-5-3-6-2-4 |
| Displacement | 466 ci [7.6 L] |
| Bore/Stroke | 4.56x4.75 inches [116 x 121 mm] |
| Power | 158.2 hp [118.0 kW] |
| Rated RPM | 2200 |
| Compression | 15.8:1 |
| Coolant capacity | 27 qts [25.6 L] |
| Oil capacity | 18 qts [17.0 L] |
| Starter volts | 12 |
Transmission Information of John Deere, 4450
Transmission variants 1
- Tractor must be stopped to select one of four ranges. Clutchless power shift between speeds 1-2 and 3-4 in range. A synchronized shift (using clutch) can be made between 2 and 3 in range.
| Transmission | John Deere Quad-Range |
|---|---|
| Oil capacity | 64 qts [60.6 L] |
| Clutch | Perma-Clutch wet disc |
| Type | Partial power shift |
| Gears | 16 forward and 6 reverse |
Transmission variants 2
- Optional transmission. Full (clutchless) power shift can be made between gears, forward and reverse.
| Transmission | John Deere Power Shift |
|---|---|
| 2WD Oil capacity | 42 qts [39.7 L] |
| Clutch | Perma-Clutch wet disc |
| Type | Full power shift |
| 4WD Oil capacity | 54 qts [51.1 L] |
| Gears | 15 forward and 4 reverse |
- 16-speed partial power shift
- 15-speed full power shift
Mechanical Specs of John Deere, 4450
- Two- or four-wheel drive
- Hydraulic wet disc brakes
- Power steering
- Sound-Gard cab standard. Optional four-post Roll-Gard ROPS.
| Final drives | Inboard planetary |
|---|---|
| Differential lock | Hydraulic rear |
Power Information of John Deere, 4450
| Rear PTO | Independent |
|---|---|
| Rear PTO(optional) | 1000@2200 |
| Engine RPM | 540@2200 |
| Clutch | Hydraulic wet disc |
| Rear PTO Type | 540/1000 |
Hydraulics Specifications of John Deere, 4450
| Pump flow | 26.5 gpm [100.3 lpm] |
|---|---|
| Type | Closed center |
| Pressure | 2277 psi [157.0 bar] |
| Pressure(optional) | 16.0 gal (Quad-Range) [60.6 L] |
| Capacity | 10.5 gal (2WD Power Shift) [39.7 L] |
| Valves | 2 or 3 |
| Valves(optional) | 13.5 gal (4WD Power Shift) [51.1 L] |
Three-Point Hitch of John Deere, 4450
| Rear Type | IIIN/II |
|---|---|
| Rear Type(optional) | 7418 lbs [3364 kg] |
| Control | Lower-link draft sensing |
| Rear lift | 6294 lbs [2854 kg] |
Electrical System of John Deere, 4450
| Ground | Negative |
|---|---|
| Batteries | 2 |
| Batteries(optional) | 90 |
| Charging system | Alternator |
| Battery volts | 6 |
| Charging amps | 72 |
With Sound-Gard cab
Where it sits
With 158 HP, the John Deere 4450 sits between 4455 (156 HP) and 4650 (187 HP) in John Deere's range. Its power puts it in the 84th percentile of 1980s models in our database (2052 machines).
Frequently asked questions
How much horsepower does the John Deere 4450 have?
The John Deere 4450 delivers 158 HP.
What years was the John Deere 4450 produced?
The John Deere 4450 was produced in 1983-1988.
What engine does the John Deere 4450 have?
The John Deere 4450 is powered by a Turbocharged diesel, 6-cylinder engine.
What transmission does the John Deere 4450 use?
The John Deere 4450 uses a John Deere Quad-Range transmission.
How much does the John Deere 4450 weigh?
The John Deere 4450 weighs 15400 lbs*Two-wheel drive tractor with cab and Power Shift. [6985 kg].
Is the John Deere 4450 4WD?
The John Deere 4450 is available in 2WD/4WD.