Head to head · Row Crop

Allis Chalmers D21 Series II vs Ford New Holland 8340

Image not recorded
Ford New HollandModel B

Ford New Holland 8340

Row Crop

power
110 hp
displacement
456 ci
Cylinders
6
Forward gears
16
Full 8340 specs
Allis ChalmersAllis Chalmers D21 Series II
vs
Ford New HollandFord New Holland 8340

How they compare

Headline specs vs. the whole Row Crop

n = 806–1,417

Engine Power

▲ D21 Series II higher · +11 hp (+10%)
D21 Series II121 hp
8340110 hp
Median Row Crop Tractor138 hp

D21 Series II is in the 40th percentile; 8340 is in the 33rd · 1,206 models

Engine Displacement

▲ 8340 higher · +30 ci (+7%)
D21 Series II426 ci
8340456 ci
Median Row Crop Tractor391 ci

D21 Series II is in the 72nd percentile; 8340 is in the 80th · 1,409 models

Cylinders

= Effectively tied
D21 Series II6
83406
Median Row Crop Tractor6

D21 Series II is in the 50th percentile; 8340 is in the 50th · 1,417 models

Forward Gears

▲ 8340 higher · +8 (+100%)
D21 Series II8
834016
Median Row Crop Tractor16

D21 Series II is in the 16th percentile; 8340 is in the 50th · 1,200 models

D21 Series II (A)8340 (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers D21 Series IIFord New Holland 8340Difference
ManufacturerAllis ChalmersFord New Holland—
ModelD21 Series II8340—
CategoryRow CropRow CropSame

Engine

SpecAllis Chalmers D21 Series IIFord New Holland 8340Difference
ManufacturerAllis ChalmersFord—
Model3500T8340—
Power Output121hp110hp▲ D21 Series II+11 hp · +10%
Rated RPM2,200RPM2,100RPM▲ D21 Series II+100 RPM · +5%
Cylinders66Same
Displacement426ci456ci▲ 8340+30 ci · +7%
Bore4.3in4.4in▲ 8340+0.1 in · +2%
Stroke5in5inSame

Transmission

SpecAllis Chalmers D21 Series IIFord New Holland 8340Difference
TypeSliding gear with dry disc clutchPartial gear synchronization with 4-speed power shift—

Dimensions & Weight

SpecAllis Chalmers D21 Series IIFord New Holland 8340Difference
Length160in176in▲ 8340+16 in · +10%
Width91.3in83in▲ D21 Series II+8.3 in · +10%
Height106inNot recorded—
Operating Weight9,502lb9,950lb▲ 8340+448 lb · +5%

Hydraulics

SpecAllis Chalmers D21 Series IIFord New Holland 8340Difference
System TypeNot recordedGear pump (SL)—
Steering TypePowerHydrostatic power—

Power Take-off (PTO)

SpecAllis Chalmers D21 Series IIFord New Holland 8340Difference
TypeIndependentIndependentSame
Speed 11,000rpm540rpm▲ D21 Series II+460 rpm · +85%
Speed 2Not recorded1,000rpm—

Tires

SpecAllis Chalmers D21 Series IIFord New Holland 8340Difference
Front Tire SizeNot recorded16.9R28—
Rear Tire SizeNot recorded20.8R38—

Hitch & Towing

SpecAllis Chalmers D21 Series IIFord New Holland 8340Difference
Hitch TypeThree-Point HitchNot recorded—
Hitch CategoryIII/IIII—
Hitch PositionRearNot recorded—

Chassis & Drive

SpecAllis Chalmers D21 Series IIFord New Holland 8340Difference
Chassis Type4x2 2WD4x4 MFWD 4WD—
Drive Type2WDNot recorded—
Steering TypePowerHydrostatic power—
Brake TypeBand actuated discHydraulic wet disc—

Electrical

SpecAllis Chalmers D21 Series IIFord New Holland 8340Difference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers D21 Series IIFord New Holland 8340Difference
Coolant7.8gal5.3gal▲ D21 Series II+2.5 gal · +47%

Operator Station

SpecAllis Chalmers D21 Series IIFord New Holland 8340Difference
TypeOpenTwo-post foldable ROPS with flat-deck platform—

Category context

Both models against the field

Engine Power

median 138 hp
A · 40th percentile (121 hp)B · 33rd percentile (110 hp)

Engine Displacement

median 391 ci
A · 72nd percentile (426 ci)B · 80th percentile (456 ci)

Cylinders

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

Forward Gears

median 16
A · 16th percentile (8)B · 50th percentile (16)

Operating Weight

median 12,307 lb
A · 28th percentile (9,502 lb)B · 31st percentile (9,950 lb)
A · D21 Series IIB · 8340Median Row Crop Tractor
Full spec pageAllis Chalmers D21 Series IIFull spec pageFord New Holland 8340