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Driving WW2 GMC CCKW



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GMC CCKW:
“From Wikipedia, the free encyclopedia”

CCKW
GMC 2 Half-ton 6×6 Truck.jpg
CCKW 353 cargo truck with winch
Type  2 1⁄2-ton 6×6 Cargo truck
Place of origin United States
Production history
Designer Yellow Truck and Coach Co.
Manufacturer Yellow/GMC Truck and Coach
Chevrolet
Produced 1941–45
Number built 562,750
Variants See text
Specifications (353 Cargo w/winch[1])
Weight 8,800 lb (4,000 kg) empty
16,400 lb (7,400 kg) loaded
Length 270 1⁄8 in (6.86 m)
Width 88 in (2.24 m)
Height 93 in (2.36 m) to cab
109 1⁄8 in (2.77 m) overall
Engine GMC 270
91 hp (68 kW)
Transmission 5 spd. x 2 range trf. case
Suspension Beam axles on leaf springs
Fuel capacity 40 US gal (150 l)
Operational
range
300 mi (482.8 km)
Speed 45 mph (72 km/h)

The GMC CCKW was 2½-ton 6×6 U.S. Army cargo truck that saw heavy service in both World War II and the Korean War. The original “Deuce and a Half”, it formed the backbone of the famed Red Ball Express that kept Allied armies supplied as they pushed eastward after the Normandy invasion.

The CCKW came in many variants, including open or closed cab, long wheel base (LWB 353) and short (SWB 352), and over a score of specialized models. It began to be phased out with the deployment of the 6×6 M35 in 1950, but remained in active U.S. service until the mid-1960s. It is related to the Chevrolet G506, built at the same factory.

In 1939-1940 the US Army Ordnance Corps was developing  2 1⁄2-ton (2,268 kg) load-rated 6×6 tactical trucks that could operate off-road in all weather. General Motors, already supplying modified commercial trucks to the Army, modified the 1939 ACKWX – built for the French Army – into the CCKW. The General Motors design was chosen by the Army and went into production at GM’S Yellow Truck and Coach division’s Pontiac, Michigan plant alongside 6×4 CCWs. Later they were also manufactured at GM’s St. Louis, Missouri Chevrolet plant.

The name CCKW comes from GMC model nomenclature:[5]

“C”, designed in 1941
“C”, conventional cab
“K”, all-wheel drive
“W”, dual rear axles

Many specialized variants of the basic 6×6 CCKW were made, some in small numbers, including some converted in the field. These include:

Air compressor
Bomb service
Chemical decontaminating
Chemical handling
Dental operating van
Dump truck
Fire engine
Fuel & gas tankers (750 US gal (2,800 l))
Fuel & oil handling (660 US gal (2,500 l)), (750 US gal (2,800 l))
High lift
K-53 radio equip. van
K-60 radio equip. van
Map reproduction van
Ordnance maintenance van
Pipeline equipment
Ponton bolster
Shop equipment GP repair van
Surgical van
Water purification van
Water tanker (700 US gal (2,600 l))
Welder’s truck

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