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United States' GMC CCKW 6x6, "Jimmies", truck

Photos

GMC CCKW 6x6 truck:
United States' GMC CCKW 6x6 truck
U.S. Army Signal Corps
GMC CCKW 6x6 truck:
United States' GMC CCKW 6x6 truck
U.S. Army Signal Corps

GMC CCKW 6x6 truck:
United States' GMC CCKW 6x6 truck
U.S. Army Signal Corps
GMC CCKW 6x6 truck:
United States' GMC CCKW 6x6 truck
U.S. Army Signal Corps

GMC CCKW 6x6 truck:
United States' GMC CCKW 6x6 truck
U.S. Army Signal Corps
GMC CCKW 6x6 truck:
United States' GMC CCKW 6x6 truck
U.S. Army Signal Corps

GMC CCKW 6x6 truck stuck in the mud:
United States' GMC CCKW 6x6 truck stuck in the mud
U.S. Army Signal Corps

Design

In 1939 the United States Army wanted to only have a maximum of two types of vehicles for each that it needed to facilitate standardization.1 Accessories and parts would be interchangeable whenever possible.1

Usage

Normandy

The Jimmies were used widely to move supplies from the beaches in Normandy to the units in the front lines.1

Great Britain's Lend Lease

The British received many of the GMC 6x6s via Lend Lease.1

Soviet Union Lend Lease

The Soviet Union received Jimmies via Lend Lease.1

Specifications

  GMC CCKW 6x6
Crew 11
Radio  
Physical Characteristics  
Weight 26,265 lb1
11,939 kg1
Length 22' 4.5"1
6.82 m1
Height 9' 10.5"1
3.01 m1
Width 8'1
2.44 m1
Ground clearance  
Ground pressure  
Wheelbase  
Armament  
Main  
Quantity  
Main  
Armor Thickness (mm)  
Engine (Make / Model) Hercules RXC1
Bore / stroke  
Cooling  
Cylinders 61
Capacity  
Net HP 1061
Power to weight ratio  
Compression ratio  
Radiator (Type)  
Capacity  
Transmission (Type)  
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Gear ratios  
Fuel (Type) Gasoline1
Octane  
Quantity  
Road consumption  
Cross country consumption  
Performance  
Speed - Road 40 mph1
64 kph1
Speed - Cross Country  
Range - Road 165 miles1
255 km1
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth  
Trench crossing  
Vertical obstacle  
Climbing ability  
Climbing ability towing  
Suspension (Type)  
Wheels each side  
Wheels (Type)  
Width  
Diameter  
Tire tread  

Sources:

  1. Armored Fighting Vehicles, 300 of the World's Greatest Military Vehicles, Philip Trewhitt, 1999
20th Century American Military History Crucial Site