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 International Harvester 7388
Image not recorded
International HarvesterModel B
International Harvester 7388
Four-Wheel Drive
- power
- 230 hp
- displacement
- 466 ci
- Cylinders
- 6
- Forward gears
- 10
Allis ChalmersAllis Chalmers HD21
vs
International HarvesterInternational Harvester 7388
How they compare
Headline specs vs. the whole Agricultural
Engine Power
▲ 7388 higher · +5 hp (+2%)HD21225 hp
7388230 hp
Median Agricultural Tractor110 hp
HD21 is in the 84th percentile; 7388 is in the 85th · 1,028 models
Engine Displacement
▲ HD21 higher · +378 ci (+81%)HD21844 ci
7388466 ci
Median Agricultural Tractor336 ci
HD21 is in the 96th percentile; 7388 is in the 84th · 1,083 models
Cylinders
= Effectively tiedHD216
73886
Median Agricultural Tractor5.5
HD21 is in the 74th percentile; 7388 is in the 74th · 1,130 models
Forward Gears
▲ 7388 higher · +8 (+400%)HD212
738810
Median Agricultural Tractor16
HD21 is in the 1st percentile; 7388 is in the 23rd · 972 models
HD21 (A)7388 (B)Median Agricultural Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers HD21 | International Harvester 7388 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | International Harvester | — |
| Model | HD21 | 7388 | — |
| Category | Agricultural | Four-Wheel Drive | — |
Engine
| Spec | Allis Chalmers HD21 | International Harvester 7388 | Difference |
|---|---|---|---|
| Manufacturer | Allis-Chalmers | International Harvester | — |
| Model | Not recorded | DTI466B | — |
| Power Output | 225hp | 230hp | ▲ 7388+5 hp · +2% |
| Rated RPM | 1,800RPM | 2,400RPM | ▲ 7388+600 RPM · +33% |
| Cylinders | 6 | 6 | Same |
| Displacement | 844ci | 466ci | ▲ HD21+378 ci · +81% |
| Bore | 5.3in | 4.3in | ▲ HD21+1 in · +23% |
| Stroke | 6.5in | 5.4in | ▲ HD21+1.2 in · +23% |
Transmission
| Spec | Allis Chalmers HD21 | International Harvester 7388 | Difference |
|---|---|---|---|
| Type | Torque Converter | Manual | — |
Dimensions & Weight
| Spec | Allis Chalmers HD21 | International Harvester 7388 | Difference |
|---|---|---|---|
| Length | 198in | 246in | ▲ 7388+48 in · +24% |
| Width | Not recorded | 116in | — |
| Height | 99in | 132in | ▲ 7388+33 in · +33% |
| Operating Weight | 45,500lb | 19,500lb | ▲ HD21+26,000 lb · +133% |
Hitch & Towing
| Spec | Allis Chalmers HD21 | International Harvester 7388 | Difference |
|---|---|---|---|
| Hitch Type | Not recorded | Three-Point Hitch | — |
| Hitch Category | Not recorded | III | — |
Chassis & Drive
| Spec | Allis Chalmers HD21 | International Harvester 7388 | Difference |
|---|---|---|---|
| Chassis Type | Not recorded | 4x4 articulated 4WD | — |
| Drive Type | Not recorded | 4WD | — |
Electrical
| Spec | Allis Chalmers HD21 | International Harvester 7388 | Difference |
|---|---|---|---|
| Starter Type | Electric | Not recorded | — |
Capacities
| Spec | Allis Chalmers HD21 | International Harvester 7388 | Difference |
|---|---|---|---|
| Coolant | 20gal | 11.5gal | ▲ HD21+8.5 gal · +74% |
Category context
Both models against the field
Engine Power
median 110 hpA · 84th percentile (225 hp)B · 85th percentile (230 hp)
Engine Displacement
median 336 ciA · 96th percentile (844 ci)B · 84th percentile (466 ci)
Cylinders
median 5.5A · 74th percentile (6)B · 74th percentile (6)
Forward Gears
median 16A · 1st percentile (2)B · 23rd percentile (10)
Operating Weight
median 10,914 lbA · 99th percentile (45,500 lb)B · 82nd percentile (19,500 lb)
A · HD21B · 7388Median Agricultural Tractor