Allis Chalmers HD9 vs Caterpillar D7
Side-by-side specs comparison
Verdict by the numbers
- The Caterpillar D7 is more powerful than the Allis Chalmers HD9: 102 HP versus 93 HP (+9 HP, +10%).
- The Allis Chalmers HD9 is the more recent model: production started in 1951, versus 1940 for the Caterpillar D7.
Full specs comparison
| Allis Chalmers HD9 | Caterpillar D7 | |
|---|---|---|
| Power | 93 HP | 102 HP |
| Production years | 1951–1955 | 1940–1954 |
| Fuel | Diesel | Diesel |
| Cylinders | 4 | 4 |
| Displacement | 4.7 L | 13.6 L |
| Transmission | Gear | Gear |
| Gears (fwd/rev) | 6 / 3 | 5 / 4 |
Frequently asked questions
Which is more powerful, the Allis Chalmers HD9 or the Caterpillar D7?
The Caterpillar D7 is more powerful than the Allis Chalmers HD9: 102 HP versus 93 HP (+9 HP, +10%).
Which is more recent, the Allis Chalmers HD9 or the Caterpillar D7?
The Allis Chalmers HD9 is the more recent model: production started in 1951, versus 1940 for the Caterpillar D7.