Head to head · Row Crop

Allis Chalmers D21 Series II vs New Holland 8340

New Holland 8340 Tractor
New HollandModel B

New Holland 8340

Row Crop

power
106 hp
displacement
456 ci
Cylinders
6
Forward gears
12
Full 8340 specs
Allis ChalmersAllis Chalmers D21 Series II
vs
New HollandNew Holland 8340

How they compare

Headline specs vs. the whole Row Crop

n = 806–1,417

Engine Power

▲ D21 Series II higher · +15 hp (+14%)
D21 Series II121 hp
8340106 hp
Median Row Crop Tractor138 hp

D21 Series II is in the 40th percentile; 8340 is in the 29th · 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 · +4 (+50%)
D21 Series II8
834012
Median Row Crop Tractor16

D21 Series II is in the 16th percentile; 8340 is in the 27th · 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 IINew Holland 8340Difference
ManufacturerAllis ChalmersNew Holland—
ModelD21 Series II8340—
CategoryRow CropRow CropSame

Engine

SpecAllis Chalmers D21 Series IINew Holland 8340Difference
ManufacturerAllis ChalmersFord—
Model3500Genesis—
Power Output121hp106hp▲ D21 Series II+15 hp · +14%
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 IINew Holland 8340Difference
TypeSliding gear with dry disc clutchSynchroShift—

Dimensions & Weight

SpecAllis Chalmers D21 Series IINew Holland 8340Difference
Length160in176in▲ 8340+16 in · +10%
Width91.3in82.7in▲ D21 Series II+8.6 in · +10%
Height106in110in▲ 8340+4 in · +4%
Operating Weight9,502lb8,684lb▲ D21 Series II+818 lb · +9%

Hydraulics

SpecAllis Chalmers D21 Series IINew Holland 8340Difference
System TypeNot recordedGear pump (SL)—
Steering TypePowerHydrostatic Power—

Power Take-off (PTO)

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

Hitch & Towing

SpecAllis Chalmers D21 Series IINew Holland 8340Difference
Hitch TypeThree-Point HitchThree-Point HitchSame
Hitch CategoryIII/IIII—
Hitch PositionRearRearSame

Chassis & Drive

SpecAllis Chalmers D21 Series IINew Holland 8340Difference
Chassis Type4x2 2WDNot recorded—
Drive Type2WD4WD—
Steering TypePowerHydrostatic Power—
Brake TypeBand actuated discHydraulic wet disc—

Electrical

SpecAllis Chalmers D21 Series IINew Holland 8340Difference
Starter TypeElectricElectricSame

Capacities

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

Operator Station

SpecAllis Chalmers D21 Series IINew Holland 8340Difference
TypeOpenTwo-post foldable ROPS—

Category context

Both models against the field

Engine Power

median 138 hp
A · 40th percentile (121 hp)B · 29th percentile (106 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 · 27th percentile (12)

Operating Weight

median 12,307 lb
A · 28th percentile (9,502 lb)B · 24th percentile (8,684 lb)
A · D21 Series IIB · 8340Median Row Crop Tractor
Full spec pageAllis Chalmers D21 Series IIFull spec pageNew Holland 8340