GAZ-MM
Overview
Manufacturer	GAZ (1938-1947) UAZ (1947-1956)
Model years	1938–1956
Body and chassis
Class	Truck
Layout	FR layout
Powertrain
Engine	3.3L GAZ-M1 I4
Transmission	4-speed manual
Dimensions
Wheelbase	3,440 mm (135.4 in)
Length	5,335 mm (210.0 in)
Width	2,040 mm (80.3 in)
Height	1,970 mm (77.6 in)
Curb weight	1,810 kg (3,990 lb)
Chronology
Predecessor	GAZ-AA
Successor	GAZ-51

The GAZ-MM is a medium-duty truck produced at the Gorki Auto Plant from 1938 to 1948, and then at the Ulyanovsky Auto Plant, up to 1956.^[1] The truck was a modernized and simplified variant of the GAZ-AA, but used the engine from the GAZ-M1, upgrading the vehicle's power to 50 hp.^[2][3]

In fact, the GAZ-MM was just a designation of the strengthened 50 hp engine, introduced in 1938, while in factory documents these trucks were still designated as GAZ-AA.^[4] This name is especially used to describe a simplified wartime model, produced from the beginning of 1942. In some series there were no doors, front brakes, front bumpers, front stamped fenders were replaced with plain welded ones, and only one headlight remained. From mid-1942 the trucks had wooden doors, with sliding parts of windows.^[4]

The GAZ-MM engine, alongside some other mechanical parts, were also used in the GAZ-64 and 67 jeeps until 1953, and also in the BA-64 military vehicle.

Variants

• The GAZ-MM is the basic model of the truck with a 50 hp engine, produced in 1938-1947 at the Gorky Automobile Plant (GAZ).
• GAZ-MM-V is a further simplified modification of the wartime GAZ-MM (the MM-V index is unofficial, the MM-13 index was used at the front), there are two types of MM-V cabins: the 1943 model with a canvas roof and canvas flaps instead of doors, and the 1944 model with wooden cladding and doors, respectively. On the 1943 truck, the fenders were made by bending from low-grade (roofing) iron. The muffler, bumpers and front brakes were missing. The headlight and windshield wiper were installed only on the driver's side. The platform was equipped only with a rear folding board. The GAZ-MM-V was produced until 1947 at GAZ, and in 1947-1956 at the Ulyanovsk Automobile Plant (UAZ).
• GAZ-410 is a dump truck on GAZ-MM and GAZ-MM-V chassis, payload 1.2 tons, all-metal self-unloading body. Production years: 1938-1950.
• The GAZ-42 was a gas-generator modification that used wooden chunks as fuel. The engine power is 35-38 hp, the payload is 1.0 tons (the real load is less, since a significant part of the shortened platform was occupied by a 150-200 kg stock of churks). Years of production: 1938-1949.
• The GAZ-43 is a coal-fired gas generator version. It was distinguished by the smaller dimensions of the gas generator set. It was produced in small batches in 1938-1941.
• GAZ-44 (LPG) is a LPG version. Gas cylinders were located under the cargo platform. It was released in a small batch in 1939.
• The GAZ-60 is a serial half-track modification with a rubber-metal track driven by a sloth from a standard axle. Production years: 1938-1943.
• The GAZ-65 is a modification of off-road capability with a tracked-wheeled propeller driven by standard rear wheels. In 1940, an experimental industrial batch was produced, which showed the complete unsuitability of this scheme for the conditions of real operation of cars both at the front and later in the rear (fuel consumption exceeded 60 l/100 km).
• GAZ-03-30 is a 17-seater general-purpose bus with a body on a wooden frame with metal cladding. It was produced at the facilities of GAZ's subcontractor GZA (Gorky Bus Plant, formerly the 1st Automobile Assembly Plant). Years of production on the GAZ-MM chassis: 1938-1942, on the GAZ-MM-V chassis - 1945-1950. The most common model of the Soviet bus of the pre-war period and the first post-war years.
• GAZ-55 (M-55) is an ambulance. To increase the smoothness of the ride and reduce shaking, it was equipped with elongated rear springs, and single-stroke shock absorbers (similar to the GAZ M-1 car). 2 shock absorbers were installed on the front axle and 4 on the rear axle. Capacity: 10 people, including four on stretchers. Years of production: 1938-1950. The most popular ambulance of the Red Army during the Second World War.