BC Vintage Truck Museum, Cloverdale, Surrey BC Canada

1921 Model S International Truck

Maximum Capacity: 1,500 pounds.

Wheel Base:124 inches.

Frame: Pressed steel channel, 5 inches deep with three cross members.

Speed: 25 to 30 miles per hour.

Engine: Four-cylinder block cast, L-head type, mounted in frame with 3-point suspension.

Lubrication: Constant level circulating splash system by plunger pump and engine pan oil troughs.

Ignition: High tension battery ignition with 4-point distributor and coil mounted forward on engine, very accessible.

Cooling: Water cooled; thermo-syphon system; large fin-and-tube radiator and fan.

Clutch: Dry plate, multiple disk.

Transmission: Sliding gear selective type, three speeds forward and reverse, direct on high. Unit construction mounted on engine by a standard S.A.E. No. 3 bell housing.

Gear Reduction: Engine to rear wheels, 6.3 to 1 on high.

Axles: Front—I-beam heat-treated steel drop-forging. Rear — internal gear type, heat-treated drop-forging for carrying load and live axle for transmitting power.

Control: Left hand drive, spark and throttle levers on steering post, foot accelerator, clutch and service brakes operated by foot pedals, gear shift and emergency brake levers in center of driving compartment.

Brakes: Service brake external contracting on rear axle drum; emergency brake internal expanding in rear axle drum.


Wheels. Artillery type with 34 x 5 straight side demountable pneumatic truck cord tires.

Fuel Capacity. 12-gallon tank in cowl.


Length of chassis over all, 181 inches.


Regular Equipment. 34 x 5 pneumatic cord truck tires, front fenders, seat box, power tire pump, self starter, electric lights, storage battery, electric horn, and tools.

Special Equipment. Supplied at additional cost: Enclosed panel body, open express body, seat and cushion, semi-enclosed, three-quarter enclosed and enclosed cabs, full length top, side, rear and front screens for full length top, windshield, speedometer with transmission drive, skid chains, spare tire and tire carrier. Suitable bodies can be secured for every hauling purpose.

Enclosed Panel Body: popular for delivery and light hauling uses. It provides a rain-vision windshield and short doors with storm curtains. Can be equipped with full length double doors at the rear, or with end-gate and three-quarter double doors.


The floor is strongly built of hard wood. The sides, top and doors are 3-ply wood construction, 3/4-inch to 1-inch thick. Sides: are protected on the interior by slats. This is a light, durable body that measures up to the International standard of quality throughout.





International Harvester built trucks from 1914 to 1986 and in 1987 it became Navistar International Corp.


Alongside trucks and agricultural equipment, IH produced Cars, construction equipment, diesel industrial engines, gas turbines and even household appliances.


The IHC AutoBuggy of 1907 was IH's first vehicle. Powered by a 2 cylinder air cooled gas engine mounted under the floor it was a high wheeled passenger vehicle very similar to a horse drawn wagon with the horse.


The IHC Auto Wagon came along in 1909 as a "light Truck" with both air or water cooled engines. The brand name became International in 1914 and a more conventional 4 cylinder Model F was introduced in 1915.They had sloping hoods and radiators behind the engine. Model  G and Model H version came along, all the way up to the Model L with a 4 ton capacity.


Mid way through 1921 IH changed it naming protocol from letters to numbers and there were trucks from the 1-ton Model 21 to the 5-ton Model. Confusingly, at the same time the radiator in grille ¾-ton Model S debuts with air filled tries and a top speed of 30 mph, pretty fast for trucks of that era. The Model S was the basis for a series of trucks that was built through the 20's up to 1930 and based on the ¾-ton Special.