John Deere 8450
The John Deere 8450 is a tractor produced by John Deere. It is equipped with a 466 ci 7.6 L engine. The listed engine power is Diesel (listed): 225 hp / 167.8 kW. Transmission: Quad-Range. Operating weight: 27560 to 29150 pounds.
Engine Power
Diesel (listed): 225 hp / 167.8 kW
Fuel & Capacities
185 gal
700.2 L
Transmission
Quad-Range
Operating Weight
29150 lbs
13222 kg
Overview
 | 1982 - 1988
8050 SeriesFour-wheel Drive (4WD) tractor
8050 Series
Four-wheel Drive (4WD) tractor |
|---|
Production | |
|---|---|
Manufacturer | John Deere |
Four-wheel Drive (4WD) tractor | |
Built in Waterloo, Iowa, USA | |
Original price was $78,707 in 1983 | |
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. | |
John Deere 8450 Engine | |
|---|---|
John Deere 7.6L 6-cyl diesel | |
Engine details ...  |
John Deere 8450 Transmission | |
|---|---|
16-speed partial power shift | |
Transmission details ...  |
John Deere 8450 Power | |
|---|---|
Engine | 225 hp
167.8 kW |
PTO (claimed) | 185 hp
138.0 kW |
Drawbar (tested) | 173.52 hp
129.4 kW |
PTO (tested) | 186.98 hp
139.4 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Four-wheel drive | |
Final drives | inboard planetary |
Differential lock | electro-hydraulic front and rear |
Articulated power steering | |
Power wet disc brakes | |
Sound-Gard cab with air-conditioning | |
Capacity | |
|---|---|
Fuel | 185 gal
700.2 L |
Hydraulic system | 37.5 gal
141.9 L |
Hydraulics | |
|---|---|
Type | closed center constant-pressure |
Capacity | 37.5 gal
141.9 L |
Valves | 2 to 4 |
Pump flow | 32 gpm
121.1 lpm |
Tractor hitch | |
|---|---|
Rear Type | 3/3N |
Control | lower-link draft sensing |
Rear lift | 9,262 lbs
4201 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | independent OptOptional |
Clutch | hydraulic wet disc |
Rear PTO Type | 1000 (1.75) |
Dimensions & Tires | |
|---|---|
Wheelbase | 125 inches
317 cm |
Weight | 27560 to 29150 pounds |
Front tire | 18.4-34 |
Rear tire | 18.4-34 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Charging system | alternator |
Charging amps | 110 |
Batteries | 2 |
Battery CCA | 800 |
Battery volts | 6 |
References | |
|---|---|
 | |
Loaders, Spreaders and Blades published in 1984, by John Deere | |
4-Wheel-Drive Tractors published in 1981, by John Deere | |
4-Wheel-Drive Tractors published in 1983, by John Deere | |
4-Wheel-Drive Tractors published in 1986, by John Deere | |
8450, 8650, 8850 Competition published in 1982, by John Deere | |
Agricultural Price List published in 1983, by John Deere |
Engine
Engine Detail — 466 ci / 7.6 L Diesel
Manufacturer | John Deere |
Configuration | intercooled turbocharged diesel, 6-cylinder, liquid-cooled |
Displacement | 466 ci
7.6 L |
Bore/Stroke | 4.5625x4.75 inches
116 x 121 mm |
Power | 225 hp
167.8 kW |
Compression | 15.5:1 |
Rated RPM | 2100 |
Firing order | 1-5-3-6-2-4 |
Starter volts | 12 |
Oil capacity | 20 qts
18.9 L |
Coolant capacity | 42 qts
39.7 L |
Transmission
Transmission — Quad-Range
Transmission | Quad-Range |
Type | partial power shift |
Gears | 16 forward and 6 reverse |
Clutch | Perma-Clutch hydraulic wet discs |
Oil capacity | 150 qts
142.0 L |
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. | |
18.4-38 tires | |
 | |
Dimensions
John Deere 8450 Tires | |
|---|---|
Ag front | 18.4-34 |
Ag rear | 18.4-34 |
Ag front | 24.5-32 |
24.5R32 | |
30.5-32 | |
30.5R32 | |
20.8-34 | |
23.1-34 | |
20.8-38 | |
Ag rear | 24.5-32 |
24.5R32 | |
30.5-32 | |
30.5R32 | |
20.8-34 | |
23.1-34 | |
20.8-38 | |
Dimensions | |
|---|---|
Wheelbase | 125 inches
317 cm |
Length | 223.5 inches
567 cm |
Shipping weight | 27560 lbs
12501 kg |
Operating weight | 29150 lbs
13222 kg |
Front axle | Standard axle: 3.938 by 96 inches
100 by 2438 mm |
Front axle | Long axle: 3.937 by 118.6 inches
99 by 3012 mm |
Standard axle rear axle | 3.938 by 96 inches
100 by 2438 mm |
Long axle rear axle | 3.937 by 118.6 inches
99 by 3012 mm |
Tests
Nebraska Tractor Test 1436 | |
|---|---|
Diesel Quad-Range 4WD
May 12 - 27, 1982
Link: Nebraska Tractor Test 1436 file | |
PTO performance | |
Power at rated engine speed | 186.98 hp
139.4 kW |
Fuel use | 11.9 gal/hour
45.0 l/hour |
Drawbar performance | |
Max power | 173.52 hp
129.4 kW |
Fuel use | 12.0 gal/hour
45.4 l/hour |
Max pull | 26,567 lbs
12050 kg |
Recommended Implements & Sizing Guide
Engineering recommendations for John Deere 8450 based on its 225 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 8+ Bottom On-Land Hitch8+ 铧重型机外牵引犁 | Commercial / Field Scale | High horsepower articulated/4WD field plowing. |
Rotary Cutter / MowerMowing & Clearing | 15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼 | Commercial / Field Scale | Large commercial field and roadside mowing operations. |
Rotary TillerSeedbed Prep | 90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机 | Commercial / Field Scale | Deep intensive seedbed preparation for commercial row crops. |
Disc HarrowSecondary Tillage | 24 to 36 ft Heavy Duty Field Disc7.3 - 11.0 m 超宽重型整地耙 | Commercial / Field Scale | Broad-acre grain tillage for high-drawbar tractors. |
Hay BalerHay & Forage | Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m) | Commercial / Field Scale | High-capacity commercial forage harvesting (1000 RPM PTO). |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for John Deere 8450.
Estimated Continuous Field Runtime: 15.8 hrs
Approximately 15.8 hours of continuous field operation at ~75% rated power on a full tank (185 gal / 700.3 L).
Estimated 75% Load Fuel Burn~11.7 gal/hr (44.3 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
John Deere 8450 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for John Deere 8450.
Converted Equivalents:
Horsepower (HP)225 hp
Kilowatts (kW)167.8 kW
Metric Horsepower (PS / CV)228.1 PS
Direct Competitor Comparison
Compare John Deere 8450 against same-era industry alternatives in the same horsepower class.
Current Model
John Deere
John Deere 8450
Engine Power:Diesel (listed): 225 hp / 167.8 kW
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