Towards the end of 1942 a requirement for a tank destroyer to replace the M10 and carry a 90 mm antiaircraft gun was given. The design and development went slowly as other projects received higher priority. It wasn't completed until the end of 1943 and was put into production in 1944.
Declared Standard in June 1944.1
Prototypes were manufactured by Chevrolet Division of the General Motors Corporation.
AP shell had velocity of 2,670 ft/sec, range of 15,600 yards, penetrate 3" at 4,700 yards. The 90 mm gun could fire a 24.1 lb shell at a muzzle velocity of 2,800'/sec.4
The chassis was very similar to the M10A1, but it had the sponson stiffener brackets moved forward to provide more room for the 90 mm ammunition.
An auxiliary generator was installed in the engine compartment with a bracket to hold the trunnions of the slip ring. The electrical installation was modified to accommodate the auxiliary engine and slip ring.
The turret was a new design and had a partial turret basket. There were seats for the gunner (right side1), loader (left side1), and commander that revolved with the turret.
The fixed fire extinguisher cover was changed as was the sub-floor doors.


Was first used in action in July 1944 in Europe.
| M36 | |
|---|---|
| Crew | Commander, driver, gun crew (3)2 51,2,4 |
| Physical Characteristics | |
| Weight | 62,000 lb2 27.7 tons1, 30.5 tons4 28,123 kg1 |
| Length w/gun | 19.6'4 |
| Length w/o gun | 20' 2"1,2 6.14 m1 |
| Height | 8' 11"1,2, 10.4'4 2.71 m1 |
| Width | 10'1,2,4 3.04 m1 |
| Width over tracks | |
| Ground clearance | 17 1/8", 17.4"4 |
| Ground contact length | 147"4 |
| Ground pressure | 12.7 psi, 12.95 psi4 |
| Turret ring diameter | |
| Armament | |
| Main | 90 mm M31,2 90 mm M3, L/534 |
| Secondary | |
| MG | .50 cal Browning M1919A4, AA 12.7 mm (.50 cal) MG1 .50 cal Browning MG AA.2 1: .50 cal M2 MG, AA4 |
| Side arms | M3 Tripod mount MG 5: M1A2 Carbines Grenades Smoke Pots |
| Quantity | |
| Main | 454, 472 (HE, APC, HVAP, Smoke) |
| Secondary | |
| MG | 1,0002, 1,0504 |
| Side arms | .30: 450 Grenades: 12 Smoke Pots: 4 |
| Armor Thickness (mm) | 122, 502 (Actual thickness at horizontal) Front: 1.5"4 Side: 0.75"4 |
| Hull Front, Upper | 1.5" (3.25") |
| Hull Front, Lower | 2" (3.75") |
| Hull Sides, Upper | 0.75" (1 3/8") |
| Hull Sides, Lower | 1.5" |
| Hull Rear | 0.75-1.5" (1") |
| Hull Top | 0.75-3/8" |
| Hull Bottom | 0.5" |
| Turret Front | 0.75"4, 3" |
| Turret Sides | 0.75"4, 1.25" (1.5") |
| Turret Rear | 4" |
| Turret Top | 1 1/8" |
| Engine (Make / Model) | Ford GAA V81,2 Ford V84 |
| Bore / stroke | |
| Cooling | Water4 |
| Cylinders | 84 |
| Capacity | |
| Net HP | 450@2,600 rpm4 |
| Power to weight ratio | |
| Compression ratio | |
| Transmission (Type) | Synchromesh4 5 forward, 1 reverse4 |
| Steering | Controlled differential4 |
| Steering ratio | |
| Starter | Electrical4 |
| Electrical system | 24-volt4 |
| Ignition | Magneto4 |
| Fuel (Type) | Gasoline4 |
| Octane | |
| Quantity | 192 gallons4 |
| Road consumption | 0.8 mpg4 |
| Cross country consumption | 0.6 mpg4 |
| Performance | |
| Traverse | 360°2,4, power and hand4 |
| Speed - Road | 26 mph4, 30 mph1,2 48 kph1 |
| Speed - Cross Country | 5-20 mph4, 18 mph2 |
| Range - Road | 150 miles1, 155 miles4 240 km1 |
| Range - Cross Country | 110 miles4 |
| Turning radius | |
| Elevation limits | -10° to +20°2, -10° to +30°4 |
| Fording depth | 3'2,4 |
| Trench crossing | 7' 6"2,4 |
| Vertical obstacle | 18"4, 2'2 |
| Climbing ability | 31° (60%) slope4 |
| Suspension (Type) | Vertical volute2,4 |
| Wheels each side | 6, 3 bogies of 2 wheels each4 |
| Return rollers each side | 3 |
| Tracks (Type) | Rubber block, rubber bushed, double pin shoes4 |
| Length | |
| Width | 16.5"2, 16.6"4 |
| Diameter | |
| Number of links | 774 |
| Pitch | 6"4 |
| Tire tread | |
| Track centers/tread | 6.9'4, 6' 11"2 |
| M36B1 | |
|---|---|
| Crew | Commander, driver, gun crew (3)2 52 |
| Physical Characteristics | |
| Weight | 68,000 lb |
| Length w/gun | |
| Length w/o gun | 20' 2"2 |
| Height | 8' 11"2 |
| Width | 8' 8.5", 10'2 |
| Width over tracks | |
| Ground clearance | |
| Ground contact length | |
| Ground pressure | |
| Turret ring diameter | |
| Armament | |
| Main | 90 mm M32 |
| Secondary | |
| MG | .50 cal Browning MG AA.2 |
| Side arms | |
| Quantity | |
| Main | 472 |
| Secondary | |
| MG | 1,0002 |
| Side arms | |
| Armor Thickness (mm) | 122, 502 |
| Hull Front, Upper | |
| Hull Front, Lower | |
| Hull Sides, Upper | |
| Hull Sides, Lower | |
| Hull Rear | |
| Hull Top | |
| Hull Bottom | |
| Turret Front | |
| Turret Sides | |
| Turret Rear | |
| Turret Top | |
| Engine (Make / Model) | Ford GAA V82 |
| Bore / stroke | |
| Cooling | |
| Cylinders | |
| Capacity | |
| Net HP | |
| Power to weight ratio | |
| Compression ratio | |
| Transmission (Type) | |
| Steering | |
| Steering ratio | |
| Starter | |
| Electrical system | |
| Ignition | |
| Fuel (Type) | |
| Octane | |
| Quantity | |
| Road consumption | |
| Cross country consumption | |
| Performance | |
| Traverse | 360°2 |
| Speed - Road | 26 mph, 30 mph2 |
| Speed - Cross Country | 18 mph2 |
| Range - Road | |
| Range - Cross Country | |
| Turning radius | |
| Elevation limits | -10° to +20°2 |
| Fording depth | 3'2 |
| Trench crossing | 7' 6"2 |
| Vertical obstacle | 2'2 |
| Climbing ability | |
| Suspension (Type) | Vertical volute.2 |
| Wheels each side | |
| Return rollers each side | |
| Tracks (Type) | |
| Length | |
| Width | 16.5"2 |
| Diameter | |
| Number of links | |
| Pitch | |
| Tire tread | |
| Track centers/tread | 6' 11"2 |
| M36B2 | |
|---|---|
| Crew | Commander, driver, gun crew (3)2 52 |
| Physical Characteristics | |
| Weight | |
| Length w/gun | |
| Length w/o gun | 20' 2"2 |
| Height | 8' 11"2 |
| Width | 10'2 |
| Width over tracks | |
| Ground clearance | |
| Ground contact length | |
| Ground pressure | |
| Turret ring diameter | |
| Armament | |
| Main | 90 mm M32 |
| Secondary | |
| MG | .50 cal Browning MG AA.2 |
| Side arms | |
| Quantity | |
| Main | 472 |
| Secondary | |
| MG | 1,0002 |
| Side arms | |
| Armor Thickness (mm) | 122, 502 |
| Hull Front, Upper | |
| Hull Front, Lower | |
| Hull Sides, Upper | |
| Hull Sides, Lower | |
| Hull Rear | |
| Hull Top | |
| Hull Bottom | |
| Turret Front | |
| Turret Sides | |
| Turret Rear | |
| Turret Top | |
| Engine (Make / Model) | Twin GM 6-712 |
| Bore / stroke | |
| Cooling | |
| Cylinders | |
| Capacity | |
| Net HP | |
| Power to weight ratio | |
| Compression ratio | |
| Transmission (Type) | |
| Steering | |
| Steering ratio | |
| Starter | |
| Electrical system | |
| Ignition | |
| Fuel (Type) | |
| Octane | |
| Quantity | |
| Road consumption | |
| Cross country consumption | |
| Performance | |
| Traverse | 360°2 |
| Speed - Road | 30 mph2 |
| Speed - Cross Country | 18 mph2 |
| Range - Road | |
| Range - Cross Country | |
| Turning radius | |
| Elevation limits | -10° to +20°2 |
| Fording depth | 3'2 |
| Trench crossing | 7' 6"2 |
| Vertical obstacle | 2'2 |
| Climbing ability | |
| Suspension (Type) | Vertical volute.2 |
| Wheels each side | |
| Return rollers each side | |
| Tracks (Type) | |
| Length | |
| Width | 16.5"2 |
| Diameter | |
| Number of links | |
| Pitch | |
| Tire tread | |
| Track centers/tread | 6' 11"2 |
Sources: