John Deere 8450
Power
225 hp
Production
1982-1988
Engine
Intercooled turbocharged diesel, 6-cylinder
Transmission
Quad-Range
Weight
29150 lbs [13222 kg]
Drive
4WD
From the same series:
Introduction
John Deere 8450 Four-Wheel Drive Tractor
The John Deere 8450 is a heavy-duty four-wheel drive tractor produced between 1982 and 1988 in Waterloo, Iowa. Part of the replacement lineup for the 40-series tractors, this model was designed to emphasize operational efficiency, specifically for large-scale planting and cultivation tasks.
Engine and Performance
The tractor is powered by a 7.6-liter (466 cubic inch) six-cylinder turbocharged and intercooled diesel engine. It generates a rated power of 225 hp at 2100 RPM. The engine features a 15.5:1 compression ratio and liquid cooling, ensuring sustained performance during intensive agricultural operations.
Transmission and Drivetrain
Equipped with a Quad-Range transmission, the 8450 offers 16 forward and 6 reverse gears. The system utilizes a partial power shift design with hydraulic wet disc clutches. Operators must stop the tractor to select one of the four ranges, while the power shift allows for clutchless transitions between speeds within each range.
Hydraulics and Hitch
The hydraulic system is a closed-center, constant-pressure type, capable of delivering a pump flow of 32 gpm (121.1 lpm). It supports between two and four valves. The rear three-point hitch is rated as category 3/3N and provides a lift capacity of 9,262 lbs, featuring lower-link draft sensing for precise implement control.
Operator Environment and Mechanical Features
The tractor features the Sound-Gard cab, which includes factory-installed air conditioning to reduce operator fatigue. Mechanical control is enhanced by articulated power steering, power wet disc brakes, and electro-hydraulic differential locks on both the front and rear axles to improve traction in challenging field conditions.
Conclusion
The John Deere 8450 is engineered for demanding field work, offering a balance of high-capacity hydraulic output and robust drivetrain durability. Its design, characterized by an articulated chassis and adaptable dual-wheel configurations, makes it a specialized tool for farmers requiring significant power for tillage, planting, and cultivation.
Production Information of John Deere, 8450
- The John Deere model 8450 was introduced, along with the 8650 and 8850, in 1982 as replacements for the 40-series four-wheel drive tractors. Efficiency was the focus of Deere's advertising for these tractor models. Deere promoted the ability of the 8450 to perform planting and cultivation work, the duals could be set to navigate 30-inch crop rows. The 8450 also had a full-power PTO available, along with Load-and-Depth control on the three-point hitch.
- Original price was $78,707 in 1983
- Four-wheel Drive (4WD) tractor
- Built in Waterloo, Iowa, USA
| Manufacturer | John Deere |
|---|
Dimension and Tires Information of John Deere, 8450
| Standard axle rear axle | 3.938 by 96 inches [100 by 2438 mm] |
|---|---|
| Wheelbase | 125 inches [317 cm] |
| Front axle | Standard axle: 3.938 by 96 inches [100 by 2438 mm] |
| Operating weight | 29150 lbs [13222 kg] |
| Length | 223.5 inches [567 cm] |
| Long axle rear axle | 3.937 by 118.6 inches [99 by 3012 mm] |
| Front axle | Long axle: 3.937 by 118.6 inches [99 by 3012 mm] |
| Shipping weight | 27560 lbs [12501 kg] |
| Ag front | 18.4-34 |
|---|---|
| Ag front(optional) | 20.8-38 |
| Ag front(optional) | 23.1-34 |
| Ag front(optional) | 24.5R32 |
| Ag front(optional) | 23.1-34 |
| Ag front | 24.5-32 |
| Ag front(optional) | 24.5R32 |
| Ag rear | 24.5-32 |
| Ag rear(optional) | 30.5-32 |
| Ag rear | 18.4-34 |
| Ag rear(optional) | 20.8-34 |
| Ag rear(optional) | 20.8-38 |
| Ag rear(optional) | 30.5R32 |
| Ag rear(optional) | 20.8-34 |
| Ag rear(optional) | 30.5R32 |
| Ag rear(optional) | 30.5-32 |
Engine Specifications of John Deere, 8450
- John Deere
- Liquid-cooled
- Intercooled turbocharged diesel
- 6-cylinder
| Starter volts | 12 |
|---|---|
| Displacement | 466 ci [7.6 L] |
| Compression | 15.5:1 |
| Bore/Stroke | 4.5625x4.75 inches [116 x 121 mm] |
| Coolant capacity | 42 qts [39.7 L] |
| Oil capacity | 20 qts [18.9 L] |
| Firing order | 1-5-3-6-2-4 |
| Rated RPM | 2100 |
| Power | 225 hp [167.8 kW] |
Transmission Information of John Deere, 8450
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 | Quad-Range |
|---|---|
| Oil capacity | 150 qts [142.0 L] |
| Clutch | Perma-Clutch hydraulic wet discs |
| Type | Partial power shift |
| Gears | 16 forward and 6 reverse |
Mechanical Specs of John Deere, 8450
- Four-wheel drive
- Power wet disc brakes
- Articulated power steering
- Sound-Gard cab with air-conditioning
| Final drives | Inboard planetary |
|---|---|
| Differential lock | Electro-hydraulic front and rear |
Power Information of John Deere, 8450
| Rear PTO(optional) | Independent |
|---|---|
| Clutch | Hydraulic wet disc |
| Rear PTO Type | 1000 (1.75) |
Hydraulics Specifications of John Deere, 8450
| Type | Closed center constant-pressure |
|---|---|
| Pump flow | 32 gpm [121.1 lpm] |
| Capacity | 37.5 gal [141.9 L] |
| Valves | 2 to 4 |
Three-Point Hitch of John Deere, 8450
| Rear Type | 3/3N |
|---|---|
| Control | Lower-link draft sensing |
| Rear lift | 9,262 lbs [4201 kg] |
Electrical System of John Deere, 8450
| Ground | Negative |
|---|---|
| Battery CCA | 800 |
| Batteries | 2 |
| Charging system | Alternator |
| Battery volts | 6 |
| Charging amps | 110 |
Where it sits
With 225 HP, the John Deere 8450 sits between 8440 (215 HP) and 8560 (235 HP) in John Deere's range. Its power puts it in the 91th percentile of 1980s models in our database (2052 machines).
Frequently asked questions
How much horsepower does the John Deere 8450 have?
The John Deere 8450 delivers 225 HP.
What years was the John Deere 8450 produced?
The John Deere 8450 was produced in 1982-1988.
What engine does the John Deere 8450 have?
The John Deere 8450 is powered by a Intercooled turbocharged diesel, 6-cylinder engine.
What transmission does the John Deere 8450 use?
The John Deere 8450 uses a Quad-Range transmission.
How much does the John Deere 8450 weigh?
The John Deere 8450 weighs 29150 lbs [13222 kg].
Is the John Deere 8450 4WD?
The John Deere 8450 is available in 4WD.