Head to head · Row Crop

John Deere 8310R vs John Deere 8420

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John DeereModel A

John Deere 8310R

Row Crop

power
272 hp
displacement
548 ci
Cylinders
6
Forward gears
16
Full 8310R 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 8310R
vs
John DeereJohn Deere 8420

How they compare

Headline specs vs. the whole Row Crop

n = 279–1,417

Engine Power

▲ 8310R higher · +2 hp (<1%)
8310R272 hp
8420270 hp
Median Row Crop Tractor138 hp

8310R is in the 90th percentile; 8420 is in the 90th · 1,206 models

Engine Displacement

▲ 8310R higher · +52 ci (+10%)
8310R548 ci
8420496 ci
Median Row Crop Tractor391 ci

8310R is in the 96th percentile; 8420 is in the 85th · 1,409 models

Cylinders

= Effectively tied
8310R6
84206
Median Row Crop Tractor6

8310R is in the 50th percentile; 8420 is in the 50th · 1,417 models

Forward Gears

= Effectively tied
8310R16
842016
Median Row Crop Tractor16

8310R is in the 50th percentile; 8420 is in the 50th · 1,200 models

8310R (A)8420 (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecJohn Deere 8310RJohn Deere 8420Difference
ManufacturerJohn DeereJohn DeereSame
Model8310R8420—
CategoryRow CropRow CropSame

Engine

SpecJohn Deere 8310RJohn Deere 8420Difference
ManufacturerJohn DeereJohn DeereSame
ModelPowerTech PSXNot recorded—
Power Output272hp270hp▲ 8310R+2 hp · <1%
Rated RPM2,100RPM2,200RPM▲ 8420+100 RPM · +5%
Cylinders66Same
Displacement548ci496ci▲ 8310R+52 ci · +10%
Bore4.7in4.6in▲ 8310R+0.1 in · +2%
Stroke5.4in5.1in▲ 8310R+0.3 in · +6%

Transmission

SpecJohn Deere 8310RJohn Deere 8420Difference
Typeselective gear fixed ratio with full range operator controlled power shiftFull power shift—

Dimensions & Weight

SpecJohn Deere 8310RJohn Deere 8420Difference
Length244in212in▲ 8310R+32 in · +15%
Width96inNot recorded—
Height139in122in▲ 8310R+17 in · +14%
Wheelbase119inNot recorded—
Operating Weight27,020lb23,955lb▲ 8310R+3,065 lb · +13%

Hydraulics

SpecJohn Deere 8310RJohn Deere 8420Difference
System Typedirect engine drive hydraulic control systemClosed center pressure-flow compensated (PFC)—
Pump Flow Capacity64gpmNot recorded—
Steering Typehydrostatic powerHydrostatic powerSame

Power Take-off (PTO)

SpecJohn Deere 8310RJohn Deere 8420Difference
TypeNot recordedIndependent with hydraulic wet discs clutch—
Speed 1Not recorded1,000rpm—
Speed 2Not recorded540rpm—
Speed 3Not recorded1,000rpm—
Power Rating295hpNot recorded—

Tires

SpecJohn Deere 8310RJohn Deere 8420Difference
Front Tire Size420/85R34Not recorded—
Rear Tire Size480/80R50480/80R46—

Hitch & Towing

SpecJohn Deere 8310RJohn Deere 8420Difference
Hitch Type4N/3III/IIIN—
Hitch CategoryCategory 3Category 3Same
Hitch PositionRearRearSame
Hitch Capacity18,326lb17,897lb▲ 8310R+429 lb · +2%

Chassis & Drive

SpecJohn Deere 8310RJohn Deere 8420Difference
Chassis Type4x4 MFWD 4WD4x4 MFWD 4WDSame
Drive Type4WD4WDSame
Steering Typehydrostatic powerHydrostatic powerSame
Brake TypeNot recordedHydraulic wet disc—

Electrical

SpecJohn Deere 8310RJohn Deere 8420Difference
Starter TypeelectricElectricSame

Capacities

SpecJohn Deere 8310RJohn Deere 8420Difference
Coolant10.8gal9gal▲ 8310R+1.8 gal · +20%

Operator Station

SpecJohn Deere 8310RJohn Deere 8420Difference
TypecabCab (standard)—

Category context

Both models against the field

Engine Power

median 138 hp
A · 90th percentile (272 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)

Forward Gears

median 16
A · 50th percentile (16)B · 50th percentile (16)

Operating Weight

median 12,307 lb
A · 96th percentile (27,020 lb)B · 93rd percentile (23,955 lb)
A · 8310RB · 8420Median Row Crop Tractor
Full spec pageJohn Deere 8310RFull spec pageJohn Deere 8420