| Specifications |
|---|
| M55: General |
| Manufacturer | Pacific Car and Foundry Co. |
| . |
| M55: Dimensions |
| Combat weight | 98,000lbs / 44,000kg |
| Length without howitzer | 311" / 790cm |
| Height | 140"360cm |
| Width |
| Howitzer overhang forward | 0" |
| . |
| M55: Armament |
| Type | 8" Howitzer M47 |
| Mount | T58 in turret |
| Ammunition | 10 rounds |
| Traverse | 60° (30° left or right) |
| Elevation | +65° to -5° |
| rate of fire | one round every two minutes |
| maximum range | 16,900 meters |
| Type | .50cal M2HB MG |
| Mount | Flexible in turret AA mount |
| Ammunition |
| Traverse | 360° (manual) |
| Elevation | Manual |
| . |
| M55: Armor |
| Assembly | Welding |
| Maximum | .59"1.5cm |
| Hull | Rolled homogeneous steel |
| Turret | Rolled homogeneous steel |
| . |
| M55: Automotive |
| Engine | Continental AV-1790-5B; 12 cylinder, 4 cycle, 90° vee gasoline |
| Horsepower | Gross: 810@2800rpm |
| Transmission | Allison CD-850-4A, two ranges forward, 1 reverse |
| Steering | Wobble stick |
| Brakes | Multiple disc |
| . |
| M55: Suspension |
| Type | Torsion bar |
| Road wheels | 7 independently sprung dual/track |
| Track return rollers | 3 dual/track |
| Drive sprockets | 11-tooth front drive |
| Idlers | Rear road wheels serve as adjustable trailing idlers |
| M55: Track |
| Type | T84E1 Center guide, double pin, chevron, rubber |
| Width | 23"58cm |
| Pitch | 6"15cm |
| . |
| M55: Performance |
| Max level road speed | 32mph51kph |
| Max grade | 0.6 |
| Min turning diameter | Pivot |
| Cruising range | ~160mi, roads~260km, roads |
| Max trench | 90"230cm |
| Max vertical obstacle | 40"100cm |
| Max fording depth | 48"120cm |
