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Allis ChalmersModel A
Allis Chalmers HD19
Crawler
- power
- Not recorded
- displacement
- 426 ci
- Cylinders
- 6
- Forward gears
- 2
Head to head · Crawler
Allis Chalmers HD19 vs Challenger 55
ChallengerModel B
Challenger 55
Agricultural
- power
- Not recorded
- displacement
- 442 ci
- Cylinders
- 6
- Forward gears
- 16
Allis ChalmersAllis Chalmers HD19
vs
ChallengerChallenger 55
How they compare
Headline specs vs. the whole Crawler
Engine Displacement
▲ 55 higher · +16 ci (+4%)HD19426 ci
55442 ci
Median Crawler Tractor468 ci
HD19 is in the 48th percentile; 55 is in the 49th · 191 models
Cylinders
= Effectively tiedHD196
556
Median Crawler Tractor6
HD19 is in the 50th percentile; 55 is in the 50th · 192 models
Forward Gears
▲ 55 higher · +14 (+700%)HD192
5516
Median Crawler Tractor10
HD19 is in the 2nd percentile; 55 is in the 69th · 179 models
Operating Weight
▲ HD19 higher · +14,395 lb (+55%)HD1940,395 lb
5526,000 lb
Median Crawler Tractor23,320 lb
HD19 is in the 79th percentile; 55 is in the 58th · 173 models
HD19 (A)55 (B)Median Crawler Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers HD19 | Challenger 55 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Challenger | — |
| Model | HD19 | 55 | — |
| Category | Crawler | Agricultural | — |
Engine
| Spec | Allis Chalmers HD19 | Challenger 55 | Difference |
|---|---|---|---|
| Manufacturer | General Motors | Caterpillar | — |
| Model | Not recorded | 3126 | — |
| Rated RPM | 1,750RPM | 2,100RPM | ▲ 55+350 RPM · +20% |
| Cylinders | 6 | 6 | Same |
| Displacement | 426ci | 442ci | ▲ 55+16 ci · +4% |
| Bore | 4.3in | 4.3in | Same |
| Stroke | 5in | 5in | Same |
Transmission
| Spec | Allis Chalmers HD19 | Challenger 55 | Difference |
|---|---|---|---|
| Type | Torque Converter | Full Power Shift | — |
Dimensions & Weight
| Spec | Allis Chalmers HD19 | Challenger 55 | Difference |
|---|---|---|---|
| Length | 191in | 211in | ▲ 55+20 in · +10% |
| Width | 109in | Not recorded | — |
| Height | 89in | 125in | ▲ 55+36 in · +40% |
| Operating Weight | 40,395lb | 26,000lb | ▲ HD19+14,395 lb · +55% |
Hydraulics
| Spec | Allis Chalmers HD19 | Challenger 55 | Difference |
|---|---|---|---|
| System Type | Not recorded | Variable-Displacement Load-Sensing Pressure-Compensated | — |
| Steering Type | Not recorded | Differential Power | — |
Hitch & Towing
| Spec | Allis Chalmers HD19 | Challenger 55 | Difference |
|---|---|---|---|
| Hitch Type | Not recorded | Three-Point Hitch | — |
| Hitch Category | Not recorded | III | — |
| Hitch Position | Not recorded | Rear | — |
Chassis & Drive
| Spec | Allis Chalmers HD19 | Challenger 55 | Difference |
|---|---|---|---|
| Chassis Type | Track | Not recorded | — |
| Drive Type | Track Drive | Not recorded | — |
| Steering Type | Not recorded | Differential Power | — |
Electrical
| Spec | Allis Chalmers HD19 | Challenger 55 | Difference |
|---|---|---|---|
| Starter Type | Electric Starter | Electric | — |
Capacities
| Spec | Allis Chalmers HD19 | Challenger 55 | Difference |
|---|---|---|---|
| Coolant | 11gal | 8.6gal | ▲ HD19+2.4 gal · +28% |
Operator Station
| Spec | Allis Chalmers HD19 | Challenger 55 | Difference |
|---|---|---|---|
| Type | Not recorded | Cab | — |
Category context
Both models against the field
Engine Displacement
median 468 ciA · 48th percentile (426 ci)B · 49th percentile (442 ci)
Cylinders
median 6A · 50th percentile (6)B · 50th percentile (6)
Forward Gears
median 10A · 2nd percentile (2)B · 69th percentile (16)
Operating Weight
median 23,320 lbA · 79th percentile (40,395 lb)B · 58th percentile (26,000 lb)
Length
median 146 inA · 64th percentile (191 in)B · 77th percentile (211 in)
A · HD19B · 55Median Crawler Tractor