This page provides a detailed comparison of the specifications for the Allis Chalmers HD6 and the Caterpillar D3B SA Special Application.
| Allis Chalmers HD6 | Caterpillar D3B SA Special Application | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Allis-Chalmers | Caterpillar |
| Engine Model | HD-344 | 3204 |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Diesel | Diesel |
| Engine Induction Type | Natural Aspirated | Turbocharged |
| Engine Cylinders | 4 | 4 |
| Engine Displacement Value | 344 ci (5.6 L) | 318 ci (5.2 L) |
| Engine Rated Rpm | 1800 | 2400 |
| Transmission | ||
| Transmission Type | Sliding Gear | Gear |
| Transmission Forward Gears | 5 | 5 |
| Transmission Reverse Gears | 1 | 4 |
| Dimensions | ||
| Length Value | 127 | 146 |
| Width Value | 78.5 | 60 |
| Operating Weight Value | 13400 lb (6078 kg) | 13846 lb (6280 kg) |
| Miscellaneous | ||
| Chassis | Crawler | Crawler |
| Drive Type | Tracks | - |
| Hydraulic System Type | - | Open Center |
| Operator Station Type | Open operator station | ROPS |
| Starter Type | Electric | Electric |
