
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; RD8 is in the 99th · 53 models
Diesel Forty is in the 21st percentile; RD8 is in the 88th · 55 models
Diesel Forty is in the 30th percentile; RD8 is in the 65th · 43 models
Diesel Forty is in the 62nd percentile; RD8 is in the 95th · 49 models
Full comparison
| Spec | Caterpillar Diesel Forty | Caterpillar RD8 | Difference |
|---|---|---|---|
| Manufacturer | Caterpillar | Caterpillar | Same |
| Model | Diesel Forty | RD8 | — |
| Category | Industrial | Industrial | Same |
| Spec | Caterpillar Diesel Forty | Caterpillar RD8 | Difference |
|---|---|---|---|
| Manufacturer | Caterpillar | Caterpillar | Same |
| Model | D6600 | D13000 | — |
| Rated RPM | 1,000RPM | 1,000RPM | Same |
| Cylinders | 3 | 6 | ▲ RD8+3 · +100% |
| Displacement | 624ci | 1,246ci | ▲ RD8+622 ci · +100% |
| Bore | 5.8in | 5.8in | Same |
| Stroke | 8in | 8in | Same |
| Spec | Caterpillar Diesel Forty | Caterpillar RD8 | Difference |
|---|---|---|---|
| Type | Gear | Gear | Same |
| Spec | Caterpillar Diesel Forty | Caterpillar RD8 | Difference |
|---|---|---|---|
| Width | 16in | 20in | ▲ RD8+4 in · +25% |
| Operating Weight | 15,642lb | 33,500lb | ▲ RD8+17,858 lb · +114% |
Category context