Head to head · Crawler

Allis Chalmers HD6 vs Caterpillar D3B SA Special Application

Allis Chalmers HD6 Tractor
Allis ChalmersModel A

Allis Chalmers HD6

Crawler

power
Not recorded
displacement
344 ci
Cylinders
4
Forward gears
5
Full HD6 specs
Allis ChalmersAllis Chalmers HD6
vs
CaterpillarCaterpillar D3B SA Special Application

How they compare

Headline specs vs. the whole Crawler

n = 134–192

Engine Displacement

▲ HD6 higher · +26 ci (+8%)
HD6344 ci
D3B SA Special Application318 ci
Median Crawler Tractor468 ci

HD6 is in the 43rd percentile; D3B SA Special Application is in the 42nd · 191 models

Cylinders

= Effectively tied
HD64
D3B SA Special Application4
Median Crawler Tractor6

HD6 is in the 33rd percentile; D3B SA Special Application is in the 33rd · 192 models

Forward Gears

= Effectively tied
HD65
D3B SA Special Application5
Median Crawler Tractor10

HD6 is in the 25th percentile; D3B SA Special Application is in the 25th · 179 models

Operating Weight

▲ D3B SA Special Application higher · +446 lb (+3%)
HD613,400 lb
D3B SA Special Application13,846 lb
Median Crawler Tractor23,320 lb

HD6 is in the 42nd percentile; D3B SA Special Application is in the 42nd · 173 models

HD6 (A)D3B SA Special Application (B)Median Crawler Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers HD6Caterpillar D3B SA Special ApplicationDifference
ManufacturerAllis ChalmersCaterpillar—
ModelHD6D3B SA Special Application—
CategoryCrawler, AgriculturalCrawler, AgriculturalSame

Engine

SpecAllis Chalmers HD6Caterpillar D3B SA Special ApplicationDifference
ManufacturerAllis-ChalmersCaterpillar—
ModelHD-3443204—
Rated RPM1,800RPM2,400RPM▲ D3B SA Special Application+600 RPM · +33%
Cylinders44Same
Displacement344ci318ci▲ HD6+26 ci · +8%
Bore4.4in4.5in▲ D3B SA Special Application+0.1 in · +2%
Stroke5.6in5in▲ HD6+0.6 in · +12%

Transmission

SpecAllis Chalmers HD6Caterpillar D3B SA Special ApplicationDifference
TypeSliding GearGear—

Dimensions & Weight

SpecAllis Chalmers HD6Caterpillar D3B SA Special ApplicationDifference
Length127in146in▲ D3B SA Special Application+19 in · +15%
Width78.5in60in▲ HD6+18.5 in · +31%
Height66in107in▲ D3B SA Special Application+41 in · +62%
Operating Weight13,400lb13,846lb▲ D3B SA Special Application+446 lb · +3%

Hydraulics

SpecAllis Chalmers HD6Caterpillar D3B SA Special ApplicationDifference
System TypeNot recordedOpen Center—

Chassis & Drive

SpecAllis Chalmers HD6Caterpillar D3B SA Special ApplicationDifference
Chassis TypeCrawlerCrawlerSame
Drive TypeTracksNot recorded—

Electrical

SpecAllis Chalmers HD6Caterpillar D3B SA Special ApplicationDifference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers HD6Caterpillar D3B SA Special ApplicationDifference
Coolant3.8gal6.8gal▲ D3B SA Special Application+3 gal · +79%

Operator Station

SpecAllis Chalmers HD6Caterpillar D3B SA Special ApplicationDifference
TypeOpen operator stationROPS—

Category context

Both models against the field

Engine Displacement

median 468 ci
A · 43rd percentile (344 ci)B · 42nd percentile (318 ci)

Cylinders

median 6
A · 33rd percentile (4)B · 33rd percentile (4)

Forward Gears

median 10
A · 25th percentile (5)B · 25th percentile (5)

Operating Weight

median 23,320 lb
A · 42nd percentile (13,400 lb)B · 42nd percentile (13,846 lb)

Length

median 146 in
A · 30th percentile (127 in)B · 50th percentile (146 in)
A · HD6B · D3B SA Special ApplicationMedian Crawler Tractor
Full spec pageAllis Chalmers HD6Full spec pageCaterpillar D3B SA Special Application