Head to head · Row Crop

John Deere 7R 290 vs John Deere 8420

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John DeereModel A

John Deere 7R 290

Row Crop

power
284 hp
displacement
548 ci
Cylinders
6
Forward gears
Not recorded
Full 7R 290 specs
John Deere 8420 Tractor
John DeereModel B

John Deere 8420

Row Crop

power
270 hp
displacement
496 ci
Cylinders
6
Forward gears
16
Full 8420 specs
John DeereJohn Deere 7R 290
vs
John DeereJohn Deere 8420

How they compare

Headline specs vs. the whole Row Crop

n = 1,157–1,417

Engine Power

▲ 7R 290 higher · +14 hp (+5%)
7R 290284 hp
8420270 hp
Median Row Crop Tractor138 hp

7R 290 is in the 91st percentile; 8420 is in the 90th · 1,206 models

Engine Displacement

▲ 7R 290 higher · +52 ci (+10%)
7R 290548 ci
8420496 ci
Median Row Crop Tractor391 ci

7R 290 is in the 96th percentile; 8420 is in the 85th · 1,409 models

Cylinders

= Effectively tied
7R 2906
84206
Median Row Crop Tractor6

7R 290 is in the 50th percentile; 8420 is in the 50th · 1,417 models

Operating Weight

▲ 7R 290 higher · +1,485 lb (+6%)
7R 29025,440 lb
842023,955 lb
Median Row Crop Tractor12,307 lb

7R 290 is in the 95th percentile; 8420 is in the 93rd · 1,350 models

7R 290 (A)8420 (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecJohn Deere 7R 290John Deere 8420Difference
ManufacturerJohn DeereJohn DeereSame
Model7R 2908420—
CategoryRow CropRow CropSame

Engine

SpecJohn Deere 7R 290John Deere 8420Difference
ManufacturerJohn DeereJohn DeereSame
Power Output284hp270hp▲ 7R 290+14 hp · +5%
Rated RPMNot recorded2,200RPM—
Cylinders66Same
Displacement548ci496ci▲ 7R 290+52 ci · +10%
Bore4.7in4.6in▲ 7R 290+0.1 in · +2%
Stroke5.4in5.1in▲ 7R 290+0.3 in · +6%

Transmission

SpecJohn Deere 7R 290John Deere 8420Difference
TypeSelective gear fixed ratio with full range operator controlled power shiftFull power shift—

Dimensions & Weight

SpecJohn Deere 7R 290John Deere 8420Difference
Length218in212in▲ 7R 290+6 in · +3%
HeightNot recorded122in—
Operating Weight25,440lb23,955lb▲ 7R 290+1,485 lb · +6%

Hydraulics

SpecJohn Deere 7R 290John Deere 8420Difference
System TypeClosed-center pressure-flow compensatedClosed center pressure-flow compensated (PFC)—
Steering TypePower steeringHydrostatic power—

Power Take-off (PTO)

SpecJohn Deere 7R 290John Deere 8420Difference
TypeNot recordedIndependent with hydraulic wet discs clutch—
Speed 1Not recorded1,000rpm—
Speed 2Not recorded540rpm—
Speed 3Not recorded1,000rpm—

Tires

SpecJohn Deere 7R 290John Deere 8420Difference
Front Tire Size420/85R34Not recorded—
Rear Tire Size480/80R50480/80R46—

Hitch & Towing

SpecJohn Deere 7R 290John Deere 8420Difference
Hitch TypeNot recordedIII/IIIN—
Hitch CategoryIII/IIINCategory 3—
Hitch PositionNot recordedRear—
Hitch CapacityNot recorded17,897lb—

Chassis & Drive

SpecJohn Deere 7R 290John Deere 8420Difference
Chassis Type4x4 MFWD 4WD4x4 MFWD 4WDSame
Drive TypeFront wheel assist with duals4WD—
Steering TypePower steeringHydrostatic power—
Brake TypeNot recordedHydraulic wet disc—

Electrical

SpecJohn Deere 7R 290John Deere 8420Difference
Starter TypeElectricElectricSame

Capacities

SpecJohn Deere 7R 290John Deere 8420Difference
CoolantNot recorded9gal—

Operator Station

SpecJohn Deere 7R 290John Deere 8420Difference
TypeNot recordedCab (standard)—

Category context

Both models against the field

Engine Power

median 138 hp
A · 91st percentile (284 hp)B · 90th percentile (270 hp)

Engine Displacement

median 391 ci
A · 96th percentile (548 ci)B · 85th percentile (496 ci)

Cylinders

median 6
A · 50th percentile (6)B · 50th percentile (6)

Operating Weight

median 12,307 lb
A · 95th percentile (25,440 lb)B · 93rd percentile (23,955 lb)

Length

median 180 in
A · 89th percentile (218 in)B · 85th percentile (212 in)
A · 7R 290B · 8420Median Row Crop Tractor
Full spec pageJohn Deere 7R 290Full spec pageJohn Deere 8420