The Carriage, Motor, 105mm Howitzer, M37 provided a mobile, compact M4 105mm howitzer platform with side armor for crew protection and secondary armament of one .50 cal. machine gun. The M37 HMC was intended to replace the M-7 Priest 105mm SP and was itself superseded in the late 1950s by the M-52 105mm Self-propelled Howitzer developed from the prototype Carriage, Motor, 105mm Howitzer, T98/T98E1. During development that began 8 July 1943, the M37 HMC was designated T76 105mm HMC. It was standardized for production as the M37 HMC in January 1945.
The M37 HMC was manufactured by the Cadillac division of General Motors, using the chassis of the M24 Chaffee light tank.
M37 105mm Howitzer Motor Carriage (HMC) is moved from Aberdeen Proving Ground, 6 August 2009. Sixty ordnance treasures made the 200-mile trip down treacherous Interstate 95 to Fort Lee, VA, during Phase I of the Ordnance Museum relocation 3-7 Aug 2009.
The M37 HMC was developed to supersede the M-7 Priest, to provide an improved mobile 105mm howitzer for artillery units in an armored division. Production of an order for 448 units began in October 1945, too late for World War II, with only 150 units produced before the contract was cancelled (316 units according to one source). They were however used in Korean War combat after the 1950 invasion.
M37 Howitzer Motor Carriage Specifications
Two Cadillac 44T24 V8, gas
110 bph each
Twin Hydramatic, 4 speeds forward, 2 reverse mated to 2 speed transfer case
Max road Speed
Manuals for the M37 Howitzer Motor Carriage include:
FM 6-76 Service of the Piece, 105mm Howitzer Motor Carriage, M37 (1945)
TM 9-717 105mm Howitzer Motor Carriage M37 (Oct 1947)