Allis Chalmers HD7 vs Caterpillar R5
Side-by-side specs comparison
Verdict by the numbers
- The Allis Chalmers HD7 is more powerful than the Caterpillar R5: 66 HP versus 64 HP (+2 HP, +3%).
- The Allis Chalmers HD7 is the more recent model: production started in 1940, versus 1934 for the Caterpillar R5.
Full specs comparison
| Allis Chalmers HD7 | Caterpillar R5 | |
|---|---|---|
| Power | 66 HP | 64 HP |
| Production years | 1940–1950 | 1934–1940 |
| Fuel | — | Gasoline |
| Cylinders | 3 | 4 |
| Displacement | 3.5 L | 10.1 L |
| Transmission | Gear | Gear |
| Gears (fwd/rev) | 4 / 1 | 4 / 1 |