Allis ChalmersModel A
Allis Chalmers 4W-305
Utility
- power
- 305 hp
- displacement
- 731 ci
- Cylinders
- 6
- Forward gears
- 20
Head to head · Utility
Allis Chalmers 4W-305 vs Big Bud HN320
Big BudModel B
Big Bud HN320
Utility
- power
- 320 hp
- displacement
- 855 ci
- Cylinders
- 6
- Forward gears
- 12
Allis ChalmersAllis Chalmers 4W-305
vs
Big BudBig Bud HN320
How they compare
Headline specs vs. the whole Utility
Engine Power
▲ HN320 higher · +15 hp (+5%)4W-305305 hp
HN320320 hp
Median Utility Tractor55 hp
4W-305 is in the 97th percentile; HN320 is in the 97th · 5,383 models
Engine Displacement
▲ HN320 higher · +124 ci (+17%)4W-305731 ci
HN320855 ci
Median Utility Tractor183 ci
4W-305 is in the 96th percentile; HN320 is in the 98th · 5,580 models
Cylinders
= Effectively tied4W-3056
HN3206
Median Utility Tractor4
4W-305 is in the 93rd percentile; HN320 is in the 93rd · 5,720 models
Forward Gears
▲ 4W-305 higher · +8 (+67%)4W-30520
HN32012
Median Utility Tractor12
4W-305 is in the 86th percentile; HN320 is in the 50th · 4,941 models
4W-305 (A)HN320 (B)Median Utility Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers 4W-305 | Big Bud HN320 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Big Bud | — |
| Model | 4W-305 | HN320 | — |
| Category | Utility | Utility | Same |
Engine
| Spec | Allis Chalmers 4W-305 | Big Bud HN320 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Cummins | — |
| Model | 6120T | NT855 | — |
| Power Output | 305hp | 320hp | ▲ HN320+15 hp · +5% |
| Rated RPM | 2,300RPM | 2,100RPM | ▲ 4W-305+200 RPM · +10% |
| Cylinders | 6 | 6 | Same |
| Displacement | 731ci | 855ci | ▲ HN320+124 ci · +17% |
| Bore | 5.3in | 5.5in | ▲ HN320+0.2 in · +4% |
| Stroke | 5.6in | 6in | ▲ HN320+0.4 in · +7% |
Transmission
| Spec | Allis Chalmers 4W-305 | Big Bud HN320 | Difference |
|---|---|---|---|
| Type | Two-speed power shift | Gear | — |
Dimensions & Weight
| Spec | Allis Chalmers 4W-305 | Big Bud HN320 | Difference |
|---|---|---|---|
| Length | 285in | Not recorded | — |
| Height | 139in | Not recorded | — |
| Operating Weight | 27,100lb | 36,000lb | ▲ HN320+8,900 lb · +33% |
Hydraulics
| Spec | Allis Chalmers 4W-305 | Big Bud HN320 | Difference |
|---|---|---|---|
| System Type | Closed center load-sensing | Open Center | — |
| Steering Type | Hydraulic power | Hydrostatic Power | — |
Power Take-off (PTO)
| Spec | Allis Chalmers 4W-305 | Big Bud HN320 | Difference |
|---|---|---|---|
| Type | Independent | Not recorded | — |
| Speed 1 | 1,000rpm | Not recorded | — |
Hitch & Towing
| Spec | Allis Chalmers 4W-305 | Big Bud HN320 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Not recorded | — |
| Hitch Category | III/IV | Not recorded | — |
| Hitch Position | Rear | Not recorded | — |
Chassis & Drive
| Spec | Allis Chalmers 4W-305 | Big Bud HN320 | Difference |
|---|---|---|---|
| Chassis Type | 4x4 articulated 4WD | 4x4 articulated 4WD | Same |
| Drive Type | 4WD | 4WD | Same |
| Steering Type | Hydraulic power | Hydrostatic Power | — |
Electrical
| Spec | Allis Chalmers 4W-305 | Big Bud HN320 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers 4W-305 | Big Bud HN320 | Difference |
|---|---|---|---|
| Coolant | 18gal | Not recorded | — |
Operator Station
| Spec | Allis Chalmers 4W-305 | Big Bud HN320 | Difference |
|---|---|---|---|
| Type | Cab | Not recorded | — |
Category context
Both models against the field
Engine Power
median 55 hpA · 97th percentile (305 hp)B · 97th percentile (320 hp)
Engine Displacement
median 183 ciA · 96th percentile (731 ci)B · 98th percentile (855 ci)
Cylinders
median 4A · 93rd percentile (6)B · 93rd percentile (6)
Forward Gears
median 12A · 86th percentile (20)B · 50th percentile (12)
Operating Weight
median 5,303 lbA · 97th percentile (27,100 lb)B · 98th percentile (36,000 lb)
A · 4W-305B · HN320Median Utility Tractor