Head to head · Row Crop

Allis Chalmers D21 Series II vs John Deere 6425

John Deere 6425 Tractor
John DeereModel B

John Deere 6425

Utility

power
120 hp
displacement
276 ci
Cylinders
4
Forward gears
16
Full 6425 specs
Allis ChalmersAllis Chalmers D21 Series II
vs
John DeereJohn Deere 6425

How they compare

Headline specs vs. the whole Row Crop

n = 806–1,417

Engine Power

▲ D21 Series II higher · +1 hp (<1%)
D21 Series II121 hp
6425120 hp
Median Row Crop Tractor138 hp

D21 Series II is in the 40th percentile; 6425 is in the 39th · 1,206 models

Engine Displacement

▲ D21 Series II higher · +150 ci (+54%)
D21 Series II426 ci
6425276 ci
Median Row Crop Tractor391 ci

D21 Series II is in the 72nd percentile; 6425 is in the 25th · 1,409 models

Cylinders

▲ D21 Series II higher · +2 (+50%)
D21 Series II6
64254
Median Row Crop Tractor6

D21 Series II is in the 50th percentile; 6425 is in the 17th · 1,417 models

Forward Gears

▲ 6425 higher · +8 (+100%)
D21 Series II8
642516
Median Row Crop Tractor16

D21 Series II is in the 16th percentile; 6425 is in the 50th · 1,200 models

D21 Series II (A)6425 (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers D21 Series IIJohn Deere 6425Difference
ManufacturerAllis ChalmersJohn Deere—
ModelD21 Series II6425—
CategoryRow CropUtility—

Engine

SpecAllis Chalmers D21 Series IIJohn Deere 6425Difference
ManufacturerAllis ChalmersJohn Deere—
Model35004045HL—
Power Output121hp120hp▲ D21 Series II+1 hp · <1%
Rated RPM2,200RPM2,300RPM▲ 6425+100 RPM · +5%
Cylinders64▲ D21 Series II+2 · +50%
Displacement426ci276ci▲ D21 Series II+150 ci · +54%
Bore4.3in4.2in▲ D21 Series II+0.1 in · +2%
Stroke5in5inSame

Transmission

SpecAllis Chalmers D21 Series IIJohn Deere 6425Difference
TypeSliding gear with dry disc clutchSynchronized / Power Shuttle—

Dimensions & Weight

SpecAllis Chalmers D21 Series IIJohn Deere 6425Difference
Length160in168in▲ 6425+8 in · +5%
Width91.3in87.2in▲ D21 Series II+4.1 in · +5%
Height106in109in▲ 6425+3 in · +3%
Operating Weight9,502lb8,333lb▲ D21 Series II+1,169 lb · +14%

Hydraulics

SpecAllis Chalmers D21 Series IIJohn Deere 6425Difference
System TypeNot recordedOpen Center Gear Pump—
Steering TypePowerHydrostatic Power—

Power Take-off (PTO)

SpecAllis Chalmers D21 Series IIJohn Deere 6425Difference
TypeIndependentNot recorded—
Speed 11,000rpmNot recorded—

Hitch & Towing

SpecAllis Chalmers D21 Series IIJohn Deere 6425Difference
Hitch TypeThree-Point HitchNot recorded—
Hitch CategoryIII/II3—
Hitch PositionRearNot recorded—

Chassis & Drive

SpecAllis Chalmers D21 Series IIJohn Deere 6425Difference
Chassis Type4x2 2WD4x2 2WDSame
Drive Type2WDNot recorded—
Steering TypePowerHydrostatic Power—
Brake TypeBand actuated discNot recorded—

Electrical

SpecAllis Chalmers D21 Series IIJohn Deere 6425Difference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers D21 Series IIJohn Deere 6425Difference
Coolant7.8gal7gal▲ D21 Series II+0.8 gal · +11%

Operator Station

SpecAllis Chalmers D21 Series IIJohn Deere 6425Difference
TypeOpenNot recorded—

Category context

Both models against the field

Engine Power

median 138 hp
A · 40th percentile (121 hp)B · 39th percentile (120 hp)

Engine Displacement

median 391 ci
A · 72nd percentile (426 ci)B · 25th percentile (276 ci)

Cylinders

median 6
A · 50th percentile (6)B · 17th percentile (4)

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 · 22nd percentile (8,333 lb)
A · D21 Series IIB · 6425Median Row Crop Tractor
Full spec pageAllis Chalmers D21 Series IIFull spec pageJohn Deere 6425