
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
Agricultural
How they compare
D21 Series II is in the 40th percentile; 299 is in the 42nd · 1,206 models
D21 Series II is in the 72nd percentile; 299 is in the 39th · 1,409 models
D21 Series II is in the 50th percentile; 299 is in the 50th · 1,417 models
D21 Series II is in the 16th percentile; 299 is in the 27th · 1,200 models
Full comparison
| Spec | Allis Chalmers D21 Series II | Massey Ferguson 299 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Massey Ferguson | — |
| Model | D21 Series II | 299 | — |
| Category | Row Crop | Agricultural | — |
| Spec | Allis Chalmers D21 Series II | Massey Ferguson 299 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Perkins | — |
| Model | 3500 | 6.354 | — |
| Power Output | 121hp | 125hp | ▲ 299+4 hp · +3% |
| Rated RPM | 2,200RPM | 2,250RPM | ▲ 299+50 RPM · +2% |
| Cylinders | 6 | 6 | Same |
| Displacement | 426ci | 354ci | ▲ D21 Series II+72 ci · +20% |
| Bore | 4.3in | 3.9in | ▲ D21 Series II+0.4 in · +10% |
| Stroke | 5in | 5in | Same |
| Spec | Allis Chalmers D21 Series II | Massey Ferguson 299 | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Multi-Power | — |
| Spec | Allis Chalmers D21 Series II | Massey Ferguson 299 | Difference |
|---|---|---|---|
| Length | 160in | Not recorded | — |
| Width | 91.3in | Not recorded | — |
| Height | 106in | Not recorded | — |
| Operating Weight | 9,502lb | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | Massey Ferguson 299 | Difference |
|---|---|---|---|
| Steering Type | Power | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | Massey Ferguson 299 | Difference |
|---|---|---|---|
| Type | Independent | Not recorded | — |
| Speed 1 | 1,000rpm | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | Massey Ferguson 299 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Not recorded | — |
| Hitch Category | III/II | III | — |
| Hitch Position | Rear | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | Massey Ferguson 299 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | Not recorded | — |
| Drive Type | 2WD | Not recorded | — |
| Steering Type | Power | Not recorded | — |
| Brake Type | Band actuated disc | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | Massey Ferguson 299 | Difference |
|---|---|---|---|
| Starter Type | Electric | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | Massey Ferguson 299 | Difference |
|---|---|---|---|
| Coolant | 7.8gal | Not recorded | — |
| Spec | Allis Chalmers D21 Series II | Massey Ferguson 299 | Difference |
|---|---|---|---|
| Type | Open | Not recorded | — |
Category context