Head to head · Agricultural

Allis Chalmers HD21 vs John Deere 8220

Allis Chalmers HD21 Tractor
Allis ChalmersModel A

Allis Chalmers HD21

Agricultural

power
225 hp
displacement
844 ci
Cylinders
6
Forward gears
2
Full HD21 specs
John Deere 8220 Tractor
John DeereModel B

John Deere 8220

Row Crop

power
225 hp
displacement
496 ci
Cylinders
6
Forward gears
16
Full 8220 specs
Allis ChalmersAllis Chalmers HD21
vs
John DeereJohn Deere 8220

How they compare

Headline specs vs. the whole Agricultural

n = 795–1,130

Engine Power

= Effectively tied
HD21225 hp
8220225 hp
Median Agricultural Tractor110 hp

HD21 is in the 84th percentile; 8220 is in the 84th · 1,028 models

Engine Displacement

▲ HD21 higher · +348 ci (+70%)
HD21844 ci
8220496 ci
Median Agricultural Tractor336 ci

HD21 is in the 96th percentile; 8220 is in the 84th · 1,083 models

Cylinders

= Effectively tied
HD216
82206
Median Agricultural Tractor5.5

HD21 is in the 74th percentile; 8220 is in the 74th · 1,130 models

Forward Gears

▲ 8220 higher · +14 (+700%)
HD212
822016
Median Agricultural Tractor16

HD21 is in the 1st percentile; 8220 is in the 50th · 972 models

HD21 (A)8220 (B)Median Agricultural Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers HD21John Deere 8220Difference
ManufacturerAllis ChalmersJohn Deere—
ModelHD218220—
CategoryAgriculturalRow Crop—

Engine

SpecAllis Chalmers HD21John Deere 8220Difference
ManufacturerAllis-ChalmersJohn Deere—
ModelNot recorded8.1 L—
Power Output225hp225hpSame
Rated RPM1,800RPM2,200RPM▲ 8220+400 RPM · +22%
Cylinders66Same
Displacement844ci496ci▲ HD21+348 ci · +70%
Bore5.3in4.6in▲ HD21+0.7 in · +15%
Stroke6.5in5.1in▲ HD21+1.4 in · +27%

Transmission

SpecAllis Chalmers HD21John Deere 8220Difference
TypeTorque ConverterFull power shift—

Dimensions & Weight

SpecAllis Chalmers HD21John Deere 8220Difference
Length198in210in▲ 8220+12 in · +6%
Height99in120in▲ 8220+21 in · +21%
Operating Weight45,500lb20,220lb▲ HD21+25,280 lb · +125%

Hydraulics

SpecAllis Chalmers HD21John Deere 8220Difference
System TypeNot recordedClosed center pressure-flow compensated (PFC)—
Steering TypeNot recordedHydrostatic power—

Power Take-off (PTO)

SpecAllis Chalmers HD21John Deere 8220Difference
TypeNot recordedIndependent with electro-hydraulic wet disc clutch—
Speed 1Not recorded1,000rpm—

Tires

SpecAllis Chalmers HD21John Deere 8220Difference
Front Tire SizeNot recorded380/85R34—
Rear Tire SizeNot recorded480/80R46—

Hitch & Towing

SpecAllis Chalmers HD21John Deere 8220Difference
Hitch TypeNot recordedIII/IIIN—
Hitch PositionNot recordedRear—
Hitch CapacityNot recorded15,180lb—

Chassis & Drive

SpecAllis Chalmers HD21John Deere 8220Difference
Chassis TypeNot recorded4x4 MFWD 4WD—
Drive TypeNot recorded4WD—
Steering TypeNot recordedHydrostatic power—
Brake TypeNot recordedHydraulic wet disc—

Electrical

SpecAllis Chalmers HD21John Deere 8220Difference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers HD21John Deere 8220Difference
Coolant20gal9gal▲ HD21+11 gal · +122%

Operator Station

SpecAllis Chalmers HD21John Deere 8220Difference
TypeNot recordedCab—

Category context

Both models against the field

Engine Power

median 110 hp
A · 84th percentile (225 hp)B · 84th percentile (225 hp)

Engine Displacement

median 336 ci
A · 96th percentile (844 ci)B · 84th percentile (496 ci)

Cylinders

median 5.5
A · 74th percentile (6)B · 74th percentile (6)

Forward Gears

median 16
A · 1st percentile (2)B · 50th percentile (16)

Operating Weight

median 10,914 lb
A · 99th percentile (45,500 lb)B · 84th percentile (20,220 lb)
A · HD21B · 8220Median Agricultural Tractor
Full spec pageAllis Chalmers HD21Full spec pageJohn Deere 8220