
Allis ChalmersModel A
Allis Chalmers D21 Series II
Row Crop
- power
- 121 hp
- displacement
- 426 ci
- Cylinders
- 6
- Forward gears
- 8
Head to head · Row Crop

Row Crop
Row Crop
How they compare
D21 Series II is in the 40th percentile; 8200 is in the 44th · 1,206 models
D21 Series II is in the 72nd percentile; 8200 is in the 78th · 1,409 models
D21 Series II is in the 50th percentile; 8200 is in the 50th · 1,417 models
D21 Series II is in the 16th percentile; 8200 is in the 95th · 1,200 models
Full comparison
| Spec | Allis Chalmers D21 Series II | Valmet 8200 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Valmet | — |
| Model | D21 Series II | 8200 | — |
| Category | Row Crop | Row Crop | Same |
| Spec | Allis Chalmers D21 Series II | Valmet 8200 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | SisuDiesel | — |
| Model | 3500 | 634D | — |
| Power Output | 121hp | 128hp | ▲ 8200+7 hp · +6% |
| Rated RPM | 2,200RPM | 2,225RPM | ▲ 8200+25 RPM · +1% |
| Cylinders | 6 | 6 | Same |
| Displacement | 426ci | 450ci | ▲ 8200+24 ci · +6% |
| Bore | 4.3in | 4.3in | Same |
| Stroke | 5in | 5.3in | ▲ 8200+0.3 in · +6% |
| Spec | Allis Chalmers D21 Series II | Valmet 8200 | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Power shift | — |
| Spec | Allis Chalmers D21 Series II | Valmet 8200 | Difference |
|---|---|---|---|
| Length | 160in | 187in | ▲ 8200+27 in · +17% |
| Width | 91.3in | Not recorded | — |
| Height | 106in | 109in | ▲ 8200+3 in · +3% |
| Operating Weight | 9,502lb | 10,360lb | ▲ 8200+858 lb · +9% |
| Spec | Allis Chalmers D21 Series II | Valmet 8200 | Difference |
|---|---|---|---|
| Steering Type | Power | Power | Same |
| Spec | Allis Chalmers D21 Series II | Valmet 8200 | Difference |
|---|---|---|---|
| Type | Independent | Not recorded | — |
| Speed 1 | 1,000rpm | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | Valmet 8200 | Difference |
|---|---|---|---|
| Front Tire Size | Not recorded | 14.9R28 | — |
| Rear Tire Size | Not recorded | 18.4R38 | — |
| Spec | Allis Chalmers D21 Series II | Valmet 8200 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Not recorded | — |
| Hitch Category | III/II | Category 3 | — |
| Hitch Position | Rear | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | Valmet 8200 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x4 MFWD 4WD | — |
| Drive Type | 2WD | 4WD | — |
| Steering Type | Power | Power | Same |
| Brake Type | Band actuated disc | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | Valmet 8200 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
| Spec | Allis Chalmers D21 Series II | Valmet 8200 | Difference |
|---|---|---|---|
| Coolant | 7.8gal | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | Valmet 8200 | Difference |
|---|---|---|---|
| Type | Open | Not recorded | — |
Category context