Allis ChalmersModel A
Allis Chalmers HD21
Agricultural
- power
- 225 hp
- displacement
- 844 ci
- Cylinders
- 6
- Forward gears
- 2
Head to head · Agricultural
Allis Chalmers HD21 vs John Deere 8300T
John DeereModel B
John Deere 8300T
Crawler
- power
- 226 hp
- displacement
- 496 ci
- Cylinders
- 6
- Forward gears
- 16
Allis ChalmersAllis Chalmers HD21
vs
John DeereJohn Deere 8300T
How they compare
Headline specs vs. the whole Agricultural
Engine Power
▲ 8300T higher · +1 hp (<1%)HD21225 hp
8300T226 hp
Median Agricultural Tractor110 hp
HD21 is in the 84th percentile; 8300T is in the 85th · 1,028 models
Engine Displacement
▲ HD21 higher · +348 ci (+70%)HD21844 ci
8300T496 ci
Median Agricultural Tractor336 ci
HD21 is in the 96th percentile; 8300T is in the 84th · 1,083 models
Cylinders
= Effectively tiedHD216
8300T6
Median Agricultural Tractor5.5
HD21 is in the 74th percentile; 8300T is in the 74th · 1,130 models
Forward Gears
▲ 8300T higher · +14 (+700%)HD212
8300T16
Median Agricultural Tractor16
HD21 is in the 1st percentile; 8300T is in the 50th · 972 models
HD21 (A)8300T (B)Median Agricultural Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers HD21 | John Deere 8300T | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | John Deere | — |
| Model | HD21 | 8300T | — |
| Category | Agricultural | Crawler | — |
Engine
| Spec | Allis Chalmers HD21 | John Deere 8300T | Difference |
|---|---|---|---|
| Manufacturer | Allis-Chalmers | John Deere | — |
| Power Output | 225hp | 226hp | ▲ 8300T+1 hp · <1% |
| Rated RPM | 1,800RPM | 2,000RPM | ▲ 8300T+200 RPM · +11% |
| Cylinders | 6 | 6 | Same |
| Displacement | 844ci | 496ci | ▲ HD21+348 ci · +70% |
| Bore | 5.3in | 4.6in | ▲ HD21+0.7 in · +15% |
| Stroke | 6.5in | 5.1in | ▲ HD21+1.4 in · +27% |
Transmission
| Spec | Allis Chalmers HD21 | John Deere 8300T | Difference |
|---|---|---|---|
| Type | Torque Converter | Selective gear fixed ratio with full range operator-controlled powershift | — |
Dimensions & Weight
| Spec | Allis Chalmers HD21 | John Deere 8300T | Difference |
|---|---|---|---|
| Length | 198in | 207in | ▲ 8300T+9 in · +5% |
| Width | Not recorded | 104in | — |
| Height | 99in | 123in | ▲ 8300T+24 in · +24% |
| Operating Weight | 45,500lb | 25,010lb | ▲ HD21+20,490 lb · +82% |
Hydraulics
| Spec | Allis Chalmers HD21 | John Deere 8300T | Difference |
|---|---|---|---|
| System Type | Not recorded | Pressure/flow compensated (PFC) | — |
| Steering Type | Not recorded | Hydrostatic power | — |
Hitch & Towing
| Spec | Allis Chalmers HD21 | John Deere 8300T | Difference |
|---|---|---|---|
| Hitch Category | Not recorded | III/IIIN | — |
Chassis & Drive
| Spec | Allis Chalmers HD21 | John Deere 8300T | Difference |
|---|---|---|---|
| Drive Type | Not recorded | Track | — |
| Steering Type | Not recorded | Hydrostatic power | — |
Electrical
| Spec | Allis Chalmers HD21 | John Deere 8300T | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers HD21 | John Deere 8300T | Difference |
|---|---|---|---|
| Coolant | 20gal | 9gal | ▲ HD21+11 gal · +122% |
Operator Station
| Spec | Allis Chalmers HD21 | John Deere 8300T | Difference |
|---|---|---|---|
| Type | Not recorded | Cab | — |
Category context
Both models against the field
Engine Power
median 110 hpA · 84th percentile (225 hp)B · 85th percentile (226 hp)
Engine Displacement
median 336 ciA · 96th percentile (844 ci)B · 84th percentile (496 ci)
Cylinders
median 5.5A · 74th percentile (6)B · 74th percentile (6)
Forward Gears
median 16A · 1st percentile (2)B · 50th percentile (16)
Operating Weight
median 10,914 lbA · 99th percentile (45,500 lb)B · 92nd percentile (25,010 lb)
A · HD21B · 8300TMedian Agricultural Tractor