Head to head · Agricultural

Allis Chalmers 7000 vs Allis Chalmers HD21

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Allis ChalmersModel A

Allis Chalmers 7000

Agricultural

power
117 hp
displacement
301 ci
Cylinders
6
Forward gears
12
Full 7000 specs
Allis Chalmers HD21 Tractor
Allis ChalmersModel B

Allis Chalmers HD21

Agricultural

power
225 hp
displacement
844 ci
Cylinders
6
Forward gears
2
Full HD21 specs
Allis ChalmersAllis Chalmers 7000
vs
Allis ChalmersAllis Chalmers HD21

How they compare

Headline specs vs. the whole Agricultural

n = 795–1,130

Engine Power

▲ HD21 higher · +108 hp (+92%)
7000117 hp
HD21225 hp
Median Agricultural Tractor110 hp

7000 is in the 55th percentile; HD21 is in the 84th · 1,028 models

Engine Displacement

▲ HD21 higher · +543 ci (+180%)
7000301 ci
HD21844 ci
Median Agricultural Tractor336 ci

7000 is in the 47th percentile; HD21 is in the 96th · 1,083 models

Cylinders

= Effectively tied
70006
HD216
Median Agricultural Tractor5.5

7000 is in the 74th percentile; HD21 is in the 74th · 1,130 models

Forward Gears

▲ 7000 higher · +10 (+500%)
700012
HD212
Median Agricultural Tractor16

7000 is in the 33rd percentile; HD21 is in the 1st · 972 models

7000 (A)HD21 (B)Median Agricultural Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers 7000Allis Chalmers HD21Difference
ManufacturerAllis ChalmersAllis ChalmersSame
Model7000HD21—
CategoryAgriculturalAgriculturalSame

Engine

SpecAllis Chalmers 7000Allis Chalmers HD21Difference
ManufacturerAllis ChalmersAllis-Chalmers—
Model2900Not recorded—
Power Output117hp225hp▲ HD21+108 hp · +92%
Rated RPM2,200RPM1,800RPM▲ 7000+400 RPM · +22%
Cylinders66Same
Displacement301ci844ci▲ HD21+543 ci · +180%
Bore3.9in5.3in▲ HD21+1.4 in · +36%
Stroke4.3in6.5in▲ HD21+2.2 in · +51%

Transmission

SpecAllis Chalmers 7000Allis Chalmers HD21Difference
TypePartial power shiftTorque Converter—

Dimensions & Weight

SpecAllis Chalmers 7000Allis Chalmers HD21Difference
Length183in198in▲ HD21+15 in · +8%
Height113in99in▲ 7000+14 in · +14%
Operating Weight9,550lb45,500lb▲ HD21+35,950 lb · +376%

Hydraulics

SpecAllis Chalmers 7000Allis Chalmers HD21Difference
System TypeOpen centerNot recorded—
Steering TypePowerNot recorded—

Power Take-off (PTO)

SpecAllis Chalmers 7000Allis Chalmers HD21Difference
TypeIndependentNot recorded—
Speed 11,000rpmNot recorded—

Tires

SpecAllis Chalmers 7000Allis Chalmers HD21Difference
Front Tire Size16-OctNot recorded—
Rear Tire Size18.4-38Not recorded—

Hitch & Towing

SpecAllis Chalmers 7000Allis Chalmers HD21Difference
Hitch TypeThree-Point HitchNot recorded—
Hitch CategoryIINot recorded—
Hitch PositionRearNot recorded—

Chassis & Drive

SpecAllis Chalmers 7000Allis Chalmers HD21Difference
Chassis Type4x2 2WDNot recorded—
Drive Type2WDNot recorded—
Steering TypePowerNot recorded—
Brake TypeDifferential dry discNot recorded—

Electrical

SpecAllis Chalmers 7000Allis Chalmers HD21Difference
Starter TypeElectric StarterElectric—

Capacities

SpecAllis Chalmers 7000Allis Chalmers HD21Difference
Coolant5.6gal20gal▲ HD21+14.4 gal · +257%

Operator Station

SpecAllis Chalmers 7000Allis Chalmers HD21Difference
TypeCab (Acousta-Cab optional or Acousta-Cab II from 1978)Not recorded—

Category context

Both models against the field

Engine Power

median 110 hp
A · 55th percentile (117 hp)B · 84th percentile (225 hp)

Engine Displacement

median 336 ci
A · 47th percentile (301 ci)B · 96th percentile (844 ci)

Cylinders

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

Forward Gears

median 16
A · 33rd percentile (12)B · 1st percentile (2)

Operating Weight

median 10,914 lb
A · 42nd percentile (9,550 lb)B · 99th percentile (45,500 lb)
A · 7000B · HD21Median Agricultural Tractor
Full spec pageAllis Chalmers 7000Full spec pageAllis Chalmers HD21