
CaterpillarModel A
Caterpillar Diesel Forty
Industrial
- power
- Not recorded
- displacement
- 624 ci
- Cylinders
- 3
- Forward gears
- 4
Head to head · Industrial

Industrial
Industrial
How they compare
Diesel Forty is in the 75th percentile; RD7 is in the 84th · 53 models
Diesel Forty is in the 21st percentile; RD7 is in the 50th · 55 models
Diesel Forty is in the 30th percentile; RD7 is in the 30th · 43 models
Diesel Forty is in the 62nd percentile; RD7 is in the 77th · 49 models
Full comparison
| Spec | Caterpillar Diesel Forty | Caterpillar RD7 | Difference |
|---|---|---|---|
| Manufacturer | Caterpillar | Caterpillar | Same |
| Model | Diesel Forty | RD7 | — |
| Category | Industrial | Industrial | Same |
| Spec | Caterpillar Diesel Forty | Caterpillar RD7 | Difference |
|---|---|---|---|
| Manufacturer | Caterpillar | Caterpillar | Same |
| Model | D6600 | Not recorded | — |
| Rated RPM | 1,000RPM | 1,000RPM | Same |
| Cylinders | 3 | 4 | ▲ RD7+1 · +33% |
| Displacement | 624ci | 831ci | ▲ RD7+207 ci · +33% |
| Bore | 5.8in | 5.8in | Same |
| Stroke | 8in | 8in | Same |
| Spec | Caterpillar Diesel Forty | Caterpillar RD7 | Difference |
|---|---|---|---|
| Type | Gear | Gear | Same |
| Spec | Caterpillar Diesel Forty | Caterpillar RD7 | Difference |
|---|---|---|---|
| Width | 16in | Not recorded | — |
| Operating Weight | 15,642lb | 21,020lb | ▲ RD7+5,378 lb · +34% |
Category context