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Allis ChalmersModel A
Allis Chalmers D21 Series I
Row Crop
- power
- 103 hp
- displacement
- 426 ci
- Cylinders
- 6
- Forward gears
- 8
Head to head · Row Crop
Allis Chalmers D21 Series I vs John Deere 6405
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John DeereModel B
John Deere 6405
Utility
- power
- 106 hp
- displacement
- 276 ci
- Cylinders
- 4
- Forward gears
- Not recorded
Allis ChalmersAllis Chalmers D21 Series I
vs
John DeereJohn Deere 6405
How they compare
Headline specs vs. the whole Row Crop
Engine Power
▲ 6405 higher · +3 hp (+3%)D21 Series I103 hp
6405106 hp
Median Row Crop Tractor138 hp
D21 Series I is in the 27th percentile; 6405 is in the 29th · 1,206 models
Engine Displacement
▲ D21 Series I higher · +150 ci (+54%)D21 Series I426 ci
6405276 ci
Median Row Crop Tractor391 ci
D21 Series I is in the 72nd percentile; 6405 is in the 25th · 1,409 models
Cylinders
▲ D21 Series I higher · +2 (+50%)D21 Series I6
64054
Median Row Crop Tractor6
D21 Series I is in the 50th percentile; 6405 is in the 17th · 1,417 models
Operating Weight
▲ D21 Series I higher · +1,805 lb (+23%)D21 Series I9,500 lb
64057,695 lb
Median Row Crop Tractor12,307 lb
D21 Series I is in the 28th percentile; 6405 is in the 18th · 1,350 models
D21 Series I (A)6405 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D21 Series I | John Deere 6405 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | John Deere | — |
| Model | D21 Series I | 6405 | — |
| Category | Row Crop | Utility | — |
Engine
| Spec | Allis Chalmers D21 Series I | John Deere 6405 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | John Deere | — |
| Model | 3400 | 4045T | — |
| Power Output | 103hp | 106hp | ▲ 6405+3 hp · +3% |
| Rated RPM | 2,200RPM | 2,300RPM | ▲ 6405+100 RPM · +5% |
| Cylinders | 6 | 4 | ▲ D21 Series I+2 · +50% |
| Displacement | 426ci | 276ci | ▲ D21 Series I+150 ci · +54% |
| Bore | 4.3in | 4.2in | ▲ D21 Series I+0.1 in · +2% |
| Stroke | 5in | 5in | Same |
Transmission
| Spec | Allis Chalmers D21 Series I | John Deere 6405 | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Multiple options: fully synchronized, power shuttle, partial power shift | — |
Dimensions & Weight
| Spec | Allis Chalmers D21 Series I | John Deere 6405 | Difference |
|---|---|---|---|
| Length | 161in | Not recorded | — |
| Width | 91.6in | Not recorded | — |
| Height | 107in | Not recorded | — |
| Operating Weight | 9,500lb | 7,695lb | ▲ D21 Series I+1,805 lb · +23% |
Hydraulics
| Spec | Allis Chalmers D21 Series I | John Deere 6405 | Difference |
|---|---|---|---|
| System Type | Not recorded | Constant flow gear pump | — |
| Steering Type | Power | Power steering | — |
Power Take-off (PTO)
| Spec | Allis Chalmers D21 Series I | John Deere 6405 | Difference |
|---|---|---|---|
| Type | Independent | Not recorded | — |
| Speed 1 | 1,000rpm | Not recorded | — |
Hitch & Towing
| Spec | Allis Chalmers D21 Series I | John Deere 6405 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Category 2 and 3 | — |
| Hitch Category | III/II | III | — |
| Hitch Position | Rear | Not recorded | — |
Chassis & Drive
| Spec | Allis Chalmers D21 Series I | John Deere 6405 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Power | Power steering | — |
| Brake Type | Band actuated disc | Not recorded | — |
Electrical
| Spec | Allis Chalmers D21 Series I | John Deere 6405 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers D21 Series I | John Deere 6405 | Difference |
|---|---|---|---|
| Coolant | 5.3gal | 4.2gal | ▲ D21 Series I+1.1 gal · +26% |
Operator Station
| Spec | Allis Chalmers D21 Series I | John Deere 6405 | Difference |
|---|---|---|---|
| Type | Open | ROPS | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 27th percentile (103 hp)B · 29th percentile (106 hp)
Engine Displacement
median 391 ciA · 72nd percentile (426 ci)B · 25th percentile (276 ci)
Cylinders
median 6A · 50th percentile (6)B · 17th percentile (4)
Operating Weight
median 12,307 lbA · 28th percentile (9,500 lb)B · 18th percentile (7,695 lb)
A · D21 Series IB · 6405Median Row Crop Tractor