Allis Chalmers HD15 vs Caterpillar D7C
Side-by-side specs comparison
Verdict by the numbers
- The Caterpillar D7C is more powerful than the Allis Chalmers HD15: 128 HP versus 116 HP (+12 HP, +10%).
- The Caterpillar D7C is the more recent model: production started in 1955, versus 1951 for the Allis Chalmers HD15.
Full specs comparison
| Allis Chalmers HD15 | Caterpillar D7C | |
|---|---|---|
| Power | 116 HP | 128 HP |
| Production years | 1951–1955 | 1955–1958 |
| Fuel | Diesel | Diesel |
| Cylinders | 6 | 4 |
| Displacement | 7 L | 13.6 L |
| Transmission | — | Gear |
| Gears (fwd/rev) | 6 / 3 | 5 / 4 |
| Cab | — | Yes |
Frequently asked questions
Which is more powerful, the Allis Chalmers HD15 or the Caterpillar D7C?
The Caterpillar D7C is more powerful than the Allis Chalmers HD15: 128 HP versus 116 HP (+12 HP, +10%).
Which is more recent, the Allis Chalmers HD15 or the Caterpillar D7C?
The Caterpillar D7C is the more recent model: production started in 1955, versus 1951 for the Allis Chalmers HD15.

