Chevrolet G506

The Chevrolet G506 trucks were a series of $1 1/2$-ton trucks produced by Chevrolet and used by the U.S. Army during and after World War II.

History
The G506 was a U.S Army Ordnance Corps supply catalog designation for the $1 1/2$-ton, 4X4, truck chassis built in large numbers by the Chevrolet Motor Division of GM.

During World War II, The U.S. sent 151,053 $1 1/2$-ton trucks of the G506 type to Russia as part of the Lend Lease program. Russian supply capability improved dramatically in the spring and summer of 1943, mainly as the result of the American trucks that were arriving in large numbers.

Engine and driveline
The G506 used a Chevrolet BV-1001-UP 235 cuin I6 OHV gasoline engine, producing 83 hp at 3100rpm and 184 lbfft at 1000 rpm. This is a smaller version of the GMC engine used in the CCKW.

All models had a 4 speed manual non-synchronized transmission and a two speed transfer case.

Chassis
The G506 had a ladder frame with two live beam axles on semi-elliptic leaf springs. GM banjo type axles were used, these axles were also used in later GMC CCKW $1 1/2$ ton (2,268kg) trucks. There were three wheelbases, 125 in extra short wheelbase used only on the G7128 Bomb servicer, 145 in short wheelbase, and the 175 in long wheelbase. All models had hydraulic brakes with vacuum boost, 7.50-20” tires and dual rear tires.

Body
Almost all G506s had a closed Chevrolet cab, except for three models. A panel van version was built for the signal corps, an open cab was used on Bomb servicers and a cab over engine type was used for long bodied cargo trucks.

Versions

 * Model G4103 Book Symbol YK - Stake and Platform COE, K-33 Truck
 * Model G4112 Book Symbol YQ - truck cargo, LWB, 4X4,
 * Model G4163 Book Symbol ZP - truck cargo, W/Winch, 4X4,
 * Model G4174 Book Symbol ZQ - truck cargo, LWB, 4X4,
 * Model G7103 Book Symbol NE - Cab
 * Model G7105 Book Symbol NG - Panel Body, see also K-51, and K-70 van
 * Model G7106 Book Symbol NH - Dump Body, Less Winch
 * Model G7107 Book Symbol NJ - Cargo Body, Less Winch
 * Model G7113 Book Symbol NK - Cab (Tractor)
 * Model G7116 Book Symbol NL - Dump Body, With Winch
 * Model G7117 Book Symbol NM - Cargo Body, With Winch
 * Model G7127 Book Symbol NP - truck cargo, LWB
 * Model G7128 Book Symbol NQ - M6 Bomb service truck G35
 * Model G7132 Book Symbol NN - Stake and Platform COE, K-54 Truck
 * Model G7163 Book Symbol NR - Telephone Body, With Earth Borer, see also K-44 truck
 * Model G7173 Book Symbol NS - Telephone Maintenance Body, see also K-43 truck
 * Army Air Force versions
 * E5 Turret Trainer
 * J3 field lighting truck
 * J4 field lighting truck
 * J5 field lighting truck
 * fire truck, class 135, fog and foam