T92 Howitzer Motor Carriage

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Howitzer Motor Carriage T92
T92 HMC prototype, circa 1944-45
Weight 127,000 lb (58 t)[1]
Length 384 in (9.8 m; 32 ft 0 in)[1]
Width 133 in (3.4 m; 11 ft 1 in)[1]
Height 125 in (3.2 m; 10 ft 5 in)[1]
Crew 8 (Commander, driver, co-driver, 5x gun crew)

Recoil M8 (Hydro-Pneu Constant)[1]
Carriage Pintle[1]
Rate of fire 1 round/min[1]
Maximum firing range 25,255 yd (23.093 km)[1]

Armor 25 mm
240 mm howitzer M1
Engine Ford GAF; 8 cylinder, gasoline
470 hp (350 kW)
Power/weight 8.1[2]
Suspension torsion bar[1]
Speed 24 km/h (15 mph)

The 240 mm Howitzer Motor Carriage T92 was a self-propelled howitzer developed by the United States of America during World War II. It never progressed to full production and introduction into service.


The 240 mm M1 howitzer was mounted on a slightly modified Heavy Tank T26E3 (which entered service as the "Heavy Tank M26 Pershing") chassis. An extra bogie wheel was fitted, to bring a total of seven.

A limited production run was ordered in March 1945, and the first test model was finished in July of that year. Total production of the T92 was five.[citation needed]


Limited numbers of both 240mm HMC T92s and 8in GMC T93s were going to be used in Operation Downfall, the planned invasion of the Japanese mainland.[citation needed] However, after the Japanese surrender on 14 August 1945, the T92s and T93s were not shipped to the Pacific Theater of Operations.

Preserved vehicles[edit]

A surviving T92 is preserved at the Detroit Arsenal in Warren, MI.[citation needed]


T93 GMC prototype, circa 1945

A similar vehicle was also built in conjunction with the T92, the T93 Gun Motor Carriage which mounted the longer 8-inch (203 mm) M1 gun instead of the 240mm howitzer.

See also[edit]


  1. ^ a b c d e f g h i Maj. Gen. Louis E. Hibbs (July 1946). Col. Devere Armstrong, ed. "Report on the field - Artillery conference" (PDF). The Field Artillery Journal (The United States Field Artillery Association) 36 (7). 
  2. ^ Col. Devere Armstrong, ed. (September 1946). "To the editor" (PDF). The Field Artillery Journal (The United States Field Artillery Association) 36 (9): 549. 

Further reading[edit]

  • R.P. Hunnicutt. Pershing: A History of the Medium Tank T20 Series. ISBN 978-0982190708. 

External links[edit]