Head to head · Row Crop

Allis Chalmers D21 Series I vs New Holland 7630

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Allis ChalmersModel A

Allis Chalmers D21 Series I

Row Crop

power
103 hp
displacement
426 ci
Cylinders
6
Forward gears
8
Full D21 Series I specs
Image not recorded
New HollandModel B

New Holland 7630

Utility

power
106 hp
displacement
275 ci
Cylinders
4
Forward gears
16
Full 7630 specs
Allis ChalmersAllis Chalmers D21 Series I
vs
New HollandNew Holland 7630

How they compare

Headline specs vs. the whole Row Crop

n = 1,140–1,417

Engine Power

▲ 7630 higher · +3 hp (+3%)
D21 Series I103 hp
7630106 hp
Median Row Crop Tractor138 hp

D21 Series I is in the 27th percentile; 7630 is in the 29th · 1,206 models

Engine Displacement

▲ D21 Series I higher · +151 ci (+55%)
D21 Series I426 ci
7630275 ci
Median Row Crop Tractor391 ci

D21 Series I is in the 72nd percentile; 7630 is in the 25th · 1,409 models

Cylinders

▲ D21 Series I higher · +2 (+50%)
D21 Series I6
76304
Median Row Crop Tractor6

D21 Series I is in the 50th percentile; 7630 is in the 17th · 1,417 models

Forward Gears

▲ 7630 higher · +8 (+100%)
D21 Series I8
763016
Median Row Crop Tractor16

D21 Series I is in the 16th percentile; 7630 is in the 50th · 1,200 models

D21 Series I (A)7630 (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers D21 Series INew Holland 7630Difference
ManufacturerAllis ChalmersNew Holland—
ModelD21 Series I7630—
CategoryRow CropUtility—

Engine

SpecAllis Chalmers D21 Series INew Holland 7630Difference
ManufacturerAllis ChalmersNew Holland—
Model3400Not recorded—
Power Output103hp106hp▲ 7630+3 hp · +3%
Rated RPM2,200RPM2,200RPMSame
Cylinders64▲ D21 Series I+2 · +50%
Displacement426ci275ci▲ D21 Series I+151 ci · +55%
Bore4.3in4.1in▲ D21 Series I+0.2 in · +5%
Stroke5in5.2in▲ 7630+0.2 in · +4%

Transmission

SpecAllis Chalmers D21 Series INew Holland 7630Difference
TypeSliding gear with dry disc clutchConstant mesh—

Dimensions & Weight

SpecAllis Chalmers D21 Series INew Holland 7630Difference
Length161in162in▲ 7630+1 in · <1%
Width91.6inNot recorded—
Height107in113in▲ 7630+6 in · +6%
Operating Weight9,500lb8,003lb▲ D21 Series I+1,497 lb · +19%

Hydraulics

SpecAllis Chalmers D21 Series INew Holland 7630Difference
System TypeNot recordedOpen center—
Steering TypePowerHydrostatic power—

Power Take-off (PTO)

SpecAllis Chalmers D21 Series INew Holland 7630Difference
TypeIndependentNot recorded—
Speed 11,000rpmNot recorded—

Hitch & Towing

SpecAllis Chalmers D21 Series INew Holland 7630Difference
Hitch TypeThree-Point HitchNot recorded—
Hitch CategoryIII/IIII—
Hitch PositionRearNot recorded—

Chassis & Drive

SpecAllis Chalmers D21 Series INew Holland 7630Difference
Chassis Type4x2 2WD4x4 MFWD 4WD—
Drive Type2WD4WD—
Steering TypePowerHydrostatic power—
Brake TypeBand actuated discNot recorded—

Electrical

SpecAllis Chalmers D21 Series INew Holland 7630Difference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers D21 Series INew Holland 7630Difference
Coolant5.3galNot recorded—

Operator Station

SpecAllis Chalmers D21 Series INew Holland 7630Difference
TypeOpenNot recorded—

Category context

Both models against the field

Engine Power

median 138 hp
A · 27th percentile (103 hp)B · 29th percentile (106 hp)

Engine Displacement

median 391 ci
A · 72nd percentile (426 ci)B · 25th percentile (275 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 (9,500 lb)B · 20th percentile (8,003 lb)
A · D21 Series IB · 7630Median Row Crop Tractor
Full spec pageAllis Chalmers D21 Series IFull spec pageNew Holland 7630