| Manufacturer | John Deere |
| Price | 78,707(USD) |
| Model | 8450 |
| Equipment Type | Four-wheel Drive 4WD Tractors |
| Factory | Waterloo, Iowa, USA |
NEBRASKA TRACTOR TEST 1436 2
| Description | Diesel Quad-Range 4WD May 12 - 27, 1982 Link: Nebraska Tractor Test 1436 file PTO performance Drawbar performance |
| Power at rated engine speed | 186.98hp / 139.4kW |
| Fuel use | 12.0gal/hour / 45.4l/hour |
| Max power | 173.52hp / 129.4kW |
| Max pull | 26,567lbs / 12050kg |
JOHN DEERE 8450 POWER
| Engine | 225hp / 167.8kW |
| PTO (claimed) | 185hp / 138.0kW |
| Drawbar (tested) | 173.52hp / 129.4kW |
| PTO (tested) | 186.98hp / 139.4kW |
ENGINE DETAIL
The John Deere 8450 features a robust 7.6L intercooled turbocharged diesel engine, delivering 225hp at a rated RPM of 2100, which provides substantial power for heavy-duty agricultural tasks. With a compression ratio of 15.5:1, it offers improved thermal efficiency, but may require higher-quality fuel to optimize performance. The substantial oil (20 quarts) and coolant capacity (42 quarts) enhance engine longevity and cooling efficiency, making it suitable for extended operation in demanding conditions.
| Description | John Deere intercooled turbocharged diesel 6-cylinder liquid-cooled |
| Displacement | 466ci / 7.6L |
| Bore/Stroke | 4.5625x4.75inches / 116x 121mm |
| Power | 225hp / 167.8kW |
| Compression | 15.5:1 |
| Rated RPM | 2100 |
| Firing order | 1-5-3-6-2-4 |
| Starter volts | 12 |
| Oil capacity | 20qts / 18.9L |
| Coolant capacity | 42qts / 39.7L |
JOHN DEERE 8450 ENGINE
The John Deere 8450 features a robust 7.6L 6-cylinder diesel engine, which provides a balance of power and fuel efficiency, making it suitable for heavy-duty applications. Its high torque output enhances productivity in challenging tasks such as tilling and plowing. However, maintenance costs may be higher due to the sophisticated engine components, especially in high-use scenarios.
| Description | John Deere 7.6L 6-cyl diesel |
TRANSMISSION
The John Deere 8450 features a Quad-Range partial power shift transmission with 16 forward and 6 reverse gears, allowing for versatility in various applications. The hydraulic wet disc Perma-Clutch enhances durability and reduces wear, but the requirement to stop for range selection can interrupt workflow. This tractor is ideal for tasks requiring multiple speed adjustments, making it beneficial in farming operations where fine-tuning speed is essential.
| Transmission | Quad-Range |
| Type | partial power shift |
| Gears | 16 forward and 6 reverse |
| Clutch | Perma-Clutch hydraulic wet discs |
| Oil capacity | 150qts / 142.0L |
| Description | 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 |
SPEEDS
| Description | 18.4-38 tires |
MECHANICAL
The John Deere 8450 features a robust 4x4 articulated design with inboard planetary final drives, enhancing traction and maneuverability in diverse terrains. The electro-hydraulic differential lock provides efficient power distribution, crucial for heavy-duty operations, while the 16-speed partial power shift transmission offers seamless gear changes, optimizing performance during various agricultural tasks. With its Sound-Gard cab and air-conditioning, operator comfort is significantly improved, making it suitable for long-duration work in demanding environments.
| Chassis | 4x4 articulated 4WD |
| Final drives | inboard planetary |
| Differential lock | electro-hydraulic front and rear |
| Steering | articulated power |
| Brakes | power wet disc |
| Cab | Sound-Gard cab with air-conditioning |
| Transmission | 16-speed partial power shift |
CAPACITY
| Fuel | 185gal / 700.2L |
| Hydraulic system | 37.5gal / 141.9L |
HYDRAULICS
| Type | closed center constant-pressure |
| Capacity | 37.5gal / 141.9L |
| Valves | 2 to 4 |
| Pump flow | 32gpm / 121.1lpm |
TRACTOR HITCH
| Rear Type | 3/3N |
| Control | lower-link draft sensing |
| Rear lift | 9,262lbs / 4201kg |
POWER TAKE-OFF (PTO)
| Rear PTO | independent |
| Clutch | hydraulic wet disc |
| Rear RPM | 1000 (1.75) |
JOHN DEERE 8450 TIRES
The John Deere 8450 tractor is equipped with Ag tires ranging from 24.5-32 to 30.5R32, providing versatile options for varying soil conditions and load requirements. The choice of tires affects traction, flotation, and soil compaction; the larger tires (30.5R32) are advantageous for heavy loads and softer soil, while smaller tires offer increased maneuverability. Operators should assess field conditions and intended uses to optimize performance and minimize soil disturbance.
| Ag front | 24.5-32 |
| Ag rear | 24.5-32 / 24.5R32 / 30.5-32 / 30.5R32 / 20.8-34 / 23.1-34 / 20.8-38 |
DIMENSIONS
| Wheelbase | 125inches / 317cm |
| Length | 223.5inches / 567cm |
| Shipping weight | 27560lbs / 12501kg |
| Operating weight | 29150lbs / 13222kg |
| Front axle | Long axle: 3.937 by 118.6inches / 99by 3012mm |
| Rear axle | Long axle: 3.937 by 118.6inches / 99by 3012mm |
DIMENSIONS & TIRES
The John Deere 8450 features a substantial wheelbase of 125 inches (317 cm), providing enhanced stability and load distribution, making it suitable for heavy tillage and plowing tasks. With a weight range of 27,560 to 29,150 pounds, it offers strong traction; however, this weight may pose challenges in less stable conditions, such as wet or soft soils. The uniform tire size of 18.4-34 at both front and rear optimizes performance for field operations but may limit versatility when switching to narrower implements for row-crop applications.
| Wheelbase | 125inches / 317cm |
| Weight | 27560 to 29150 pounds |
| Front tire | 18.4-34 |
| Rear tire | 18.4-34 |
BLADE 1
| Type | front-mount John Deere 864 |
| Width | 144inches / 365cm |
| Height | 38inches / 96cm |
| Lift height | 20inches / 50cm |
| Angle | 18° |
| Cut depth | 6inches / 15cm |
| Lift type | hydraulic |
| Angle type | manual |
BLADE 2
| Type | front-mount John Deere 865 |
| Width | 144inches / 365cm |
| Height | 38inches / 96cm |
| Lift height | 20inches / 50cm |
| Angle | 18° |
| Cut depth | 6 inches /15 cm |
| Lift type | hydraulic |
| Angle type | hydraulic |
8450 SERIAL NUMBERS
| Location | Serial number plate on the rear of the tractor |
| 1982 | 1000 |
| 1983 | 2000 |
| 1984 | 3501 |
| 1985 | 5001 |
| 1986 | 5501 |
| 1987 | 6001 |
| 1988 | 6501 |
ELECTRICAL
| Ground | negative |
| Charging system | alternator |
| Charging amps | 110 |
| Batteries | 2 |
| Battery CCA | 800 |
| Battery volts | 6 |