
Allis ChalmersModel A
Allis Chalmers HD21
Agricultural
- power
- 225 hp
- displacement
- 844 ci
- Cylinders
- 6
- Forward gears
- 2
Head to head · Agricultural

Agricultural

Row Crop
How they compare
HD21 is in the 84th percentile; TG230 is in the 85th · 1,028 models
HD21 is in the 96th percentile; TG230 is in the 86th · 1,083 models
HD21 is in the 74th percentile; TG230 is in the 74th · 1,130 models
HD21 is in the 1st percentile; TG230 is in the 68th · 972 models
Full comparison
| Spec | Allis Chalmers HD21 | New Holland TG230 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | New Holland | — |
| Model | HD21 | TG230 | — |
| Category | Agricultural | Row Crop | — |
| Spec | Allis Chalmers HD21 | New Holland TG230 | Difference |
|---|---|---|---|
| Manufacturer | Allis-Chalmers | CDC | — |
| Power Output | 225hp | 230hp | ▲ TG230+5 hp · +2% |
| Rated RPM | 1,800RPM | 2,200RPM | ▲ TG230+400 RPM · +22% |
| Cylinders | 6 | 6 | Same |
| Displacement | 844ci | 505ci | ▲ HD21+339 ci · +67% |
| Bore | 5.3in | 4.5in | ▲ HD21+0.8 in · +18% |
| Stroke | 6.5in | 5.3in | ▲ HD21+1.2 in · +23% |
| Spec | Allis Chalmers HD21 | New Holland TG230 | Difference |
|---|---|---|---|
| Type | Torque Converter | Full power shift | — |
| Spec | Allis Chalmers HD21 | New Holland TG230 | Difference |
|---|---|---|---|
| Length | 198in | Not recorded | — |
| Height | 99in | Not recorded | — |
| Operating Weight | 45,500lb | 20,340lb | ▲ HD21+25,160 lb · +124% |
| Spec | Allis Chalmers HD21 | New Holland TG230 | Difference |
|---|---|---|---|
| System Type | Not recorded | Closed center load sensing | — |
| Steering Type | Not recorded | Power | — |
| Spec | Allis Chalmers HD21 | New Holland TG230 | Difference |
|---|---|---|---|
| Hitch Type | Not recorded | III/IIIN | — |
| Hitch Category | Not recorded | III/IIIN | — |
| Hitch Position | Not recorded | Rear | — |
| Spec | Allis Chalmers HD21 | New Holland TG230 | Difference |
|---|---|---|---|
| Chassis Type | Not recorded | 4x4 MFWD 4WD | — |
| Drive Type | Not recorded | 4WD | — |
| Steering Type | Not recorded | Power | — |
| Spec | Allis Chalmers HD21 | New Holland TG230 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
| Spec | Allis Chalmers HD21 | New Holland TG230 | Difference |
|---|---|---|---|
| Coolant | 20gal | Not recorded | — |
Category context