Allis Chalmers A vs Caterpillar Forty
Side-by-side specs comparison
Verdict by the numbers
- The Allis Chalmers A is more powerful than the Caterpillar Forty: 56 HP versus 54 HP (+2 HP, +4%).
- The Allis Chalmers A is the more recent model: production started in 1936, versus 1934 for the Caterpillar Forty.
Full specs comparison
| Allis Chalmers A | Caterpillar Forty | |
|---|---|---|
| Power | 56 HP | 54 HP |
| Production years | 1936–1942 | 1934–1936 |
| Fuel | Distillate | Gasoline |
| Cylinders | 4 | 4 |
| Displacement | 8.4 L | 8 L |
| Weight | 3 254 kg | — |
| Drive | 2WD | — |
| Transmission | Synchronized | Gear |
| Gears (fwd/rev) | 4 / 1 | 4 / 1 |
| Length | 355 cm | — |
Frequently asked questions
Which is more powerful, the Allis Chalmers A or the Caterpillar Forty?
The Allis Chalmers A is more powerful than the Caterpillar Forty: 56 HP versus 54 HP (+2 HP, +4%).
Which is more recent, the Allis Chalmers A or the Caterpillar Forty?
The Allis Chalmers A is the more recent model: production started in 1936, versus 1934 for the Caterpillar Forty.

