The 155 mm Gun Motor Carriage, M40 was an improved version of the 155 mm Gun Motor Carriage, M12. It was equipped with a modern gun, and used the Medium Tank, M4 chassis. A total of 311 out of a planned 600 were completed before the end of the war.
The 155 mm gun could be replaced with an 8 inch howitzer, with the designation 8 in Howitzer Motor Carriage, M43. 48 of these vehicles were completed before the war. An ammunition carrier variant and a 250 mm mortar version were also planned, but production never started.
| 155 mm Gun Motor Carriage, M40 | |
|---|---|
| Crew | |
| Crew | 8 |
| Physical Characteristics | |
| Weight | 36.3 t |
| Length | 9.07 m |
| Width | 3.15 m |
| Height | 2.68 m |
| Performance | |
| Speed (max) | 38.6 km/h |
| Engine | |
| Engine | Continental R-975 |
| Net h.p. | 353 |
| Armament | |
| Primary weapon | 155 mm M2 (1) |
