Allis ChalmersModel A
Allis Chalmers 8550
Utility
- power
- 300 hp
- displacement
- 731 ci
- Cylinders
- 6
- Forward gears
- 20
Head to head · Utility
Allis Chalmers 8550 vs Challenger 70C
ChallengerModel B
Challenger 70C
Tractor
- power
- 285 hp
- displacement
- 638 ci
- Cylinders
- 6
- Forward gears
- 10
Allis ChalmersAllis Chalmers 8550
vs
ChallengerChallenger 70C
How they compare
Headline specs vs. the whole Utility
Engine Power
▲ 8550 higher · +15 hp (+5%)8550300 hp
70C285 hp
Median Utility Tractor55 hp
8550 is in the 97th percentile; 70C is in the 96th · 5,383 models
Engine Displacement
▲ 8550 higher · +93 ci (+15%)8550731 ci
70C638 ci
Median Utility Tractor183 ci
8550 is in the 96th percentile; 70C is in the 95th · 5,580 models
Cylinders
= Effectively tied85506
70C6
Median Utility Tractor4
8550 is in the 93rd percentile; 70C is in the 93rd · 5,720 models
Forward Gears
▲ 8550 higher · +10 (+100%)855020
70C10
Median Utility Tractor12
8550 is in the 86th percentile; 70C is in the 39th · 4,941 models
8550 (A)70C (B)Median Utility Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers 8550 | Challenger 70C | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Challenger | — |
| Model | 8550 | 70C | — |
| Category | Utility | Not recorded | — |
Engine
| Spec | Allis Chalmers 8550 | Challenger 70C | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Caterpillar | — |
| Model | 6120T | 3306 DITA | — |
| Power Output | 300hp | 285hp | ▲ 8550+15 hp · +5% |
| Rated RPM | 2,500RPM | 2,100RPM | ▲ 8550+400 RPM · +19% |
| Cylinders | 6 | 6 | Same |
| Displacement | 731ci | 638ci | ▲ 8550+93 ci · +15% |
| Bore | 5.3in | 4.8in | ▲ 8550+0.5 in · +10% |
| Stroke | 6.3in | 6in | ▲ 8550+0.3 in · +5% |
Transmission
| Spec | Allis Chalmers 8550 | Challenger 70C | Difference |
|---|---|---|---|
| Type | Partial Power Shift | Full power shift | — |
Dimensions & Weight
| Spec | Allis Chalmers 8550 | Challenger 70C | Difference |
|---|---|---|---|
| Length | 285in | 232in | ▲ 8550+53 in · +23% |
| Width | 95.5in | 120in | ▲ 70C+24.5 in · +26% |
| Height | 139in | 128in | ▲ 8550+11 in · +9% |
| Operating Weight | 27,040lb | 35,685lb | ▲ 70C+8,645 lb · +32% |
Hydraulics
| Spec | Allis Chalmers 8550 | Challenger 70C | Difference |
|---|---|---|---|
| System Type | Closed Center | Closed center | Same |
| Steering Type | Hydrostatic Power | Not recorded | — |
Power Take-off (PTO)
| Spec | Allis Chalmers 8550 | Challenger 70C | Difference |
|---|---|---|---|
| Type | Independent | 1000 | — |
| Speed 1 | 1,000rpm | Not recorded | — |
Hitch & Towing
| Spec | Allis Chalmers 8550 | Challenger 70C | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Not recorded | — |
| Hitch Category | IV/III | Not recorded | — |
Chassis & Drive
| Spec | Allis Chalmers 8550 | Challenger 70C | Difference |
|---|---|---|---|
| Chassis Type | 4x4 Articulated 4WD | Not recorded | — |
| Drive Type | 4WD | Not recorded | — |
| Steering Type | Hydrostatic Power | Not recorded | — |
| Brake Type | Hydraulic Wet Discs | Not recorded | — |
Electrical
| Spec | Allis Chalmers 8550 | Challenger 70C | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers 8550 | Challenger 70C | Difference |
|---|---|---|---|
| Coolant | 18gal | 15gal | ▲ 8550+3 gal · +20% |
Operator Station
| Spec | Allis Chalmers 8550 | Challenger 70C | Difference |
|---|---|---|---|
| Type | Acousta Cab II with heat and air-conditioning | Cab | — |
Category context
Both models against the field
Engine Power
median 55 hpA · 97th percentile (300 hp)B · 96th percentile (285 hp)
Engine Displacement
median 183 ciA · 96th percentile (731 ci)B · 95th percentile (638 ci)
Cylinders
median 4A · 93rd percentile (6)B · 93rd percentile (6)
Forward Gears
median 12A · 86th percentile (20)B · 39th percentile (10)
Operating Weight
median 5,303 lbA · 96th percentile (27,040 lb)B · 98th percentile (35,685 lb)
A · 8550B · 70CMedian Utility Tractor