International Harvester W-450 Specs ( 1956-1958 )
Overview
The International Harvester W-450 is a standard-tread farm tractor produced in Rock Island, Illinois, from 1956 to 1958. It features a 281 cubic inch (4.6L) four-cylinder engine available in gasoline, diesel, and LP gas configurations, paired with a Torque Amplifier transmission offering 10 forward gears. Testing at the Nebraska Tractor Test facility demonstrated drawbar outputs ranging from 41.20 hp to 47.30 hp depending on the fuel type and configuration.
Ideal Applications
Engine Configuration and Fuel Options:
The W-450 utilized a 4.6L vertical I-head engine design across three fuel variants, each rated at 1450 RPM and featuring specific compression ratios such as 6.6:1 for gasoline and 17.45:1 for diesel.
Transmission and Power Delivery:
This model is equipped with a two-speed power shift Torque Amplifier transmission providing 10 forward and 2 reverse gears, along with an independent 540 RPM rear PTO.
Tested Drawbar and Pull Performance:
Nebraska Tractor Test results recorded a maximum pull of 6,684 lbs for the LP gas version and a maximum drawbar power of 45.84 hp for the gasoline version when tested in gear 3.
Production
| Description | Standard-tread tractor / Built in Rock Island, Illinois, USA |
|---|---|
| Manufacturer | International Harvester |
Engine
| Bore/Stroke | 4.125x5.25 inches (105 x 133 mm) / 4.125x5.25 inches (105 x 133 mm) / 4.125x5.25 inches (105 x 133 mm) |
|---|---|
| Compression | 6.6:1 / 17.45:1 / 8.35:1 |
| Coolant capacity | 28 qts (26.5 L) |
| Description | International Harvester / gasoline / 4-cylinder / liquid-cooled vertical I-head / International Harvester / diesel / 4-cylinder / liquid-cooled vertical I-head / International Harvester / LP gas / 4-cylinder / liquid-cooled vertical I-head |
| Displacement | 281 ci (4.6 L) / 281 ci (4.6 L) / 281 ci (4.6 L) |
| Rated RPM | 1450 / 1450 / 1450 |
| Starter volts | 6 / 12 / 6 |
| Engine type | International Harvester 4.6L 4-cyl gasoline / International Harvester 4.6L 4-cyl diesel / International Harvester 4.6L 4-cyl LP gas |
| Engine type | International Harvester 4.6L 4-cyl gasoline / International Harvester 4.6L 4-cyl diesel / International Harvester 4.6L 4-cyl LP gas |
| Fuel tank | 21 gal (79.5 L) |
| Belt (tested) | 51.94 hp (38.7 kW) |
| Drawbar (claimed) | 34-37 hp (25.4 kW) |
| Drawbar (tested) | 47.30 hp (35.3 kW) |
| PTO (claimed) | 41-46 hp (30.6 kW) |
Transmission
| Gears | 10 forward and 2 reverse |
|---|---|
| Transmission | Torque Amplifier |
| Transmission type | 10-speed two-speed power shift |
| Type | two-speed power shift |
Mechanical
| Cab | Open operator station. |
|---|---|
| Drive type | Two-wheel drive |
PTO
| Rear PTO | independent |
|---|---|
| Rear PTO Type | 540 |
Dimensions & Tires
| Height | 95 inches (241 cm) |
|---|---|
| Length | 130 inches (330 cm) |
| Shipping weight | 5720 lbs (2594 kg) |
| Wheelbase | 82 inches (208 cm) |
| Width | 84 inches (213 cm) |
| Front tire | 6.00-16 |
| Rear tire | 15.5-38 |
| Weight | 5720 lbs (2594 kg) |
| Wheelbase | 82 inches (208 cm) |
| Ag front | 6.00-16 |
| Ag rear | 15.5-38 |
Nebraska Tractor Test 533
| Belt fuel use (max) | 4.4 gal/hour (16.7 l/hour) |
|---|---|
| Belt power (max) | 51.94 hp (38.7 kW) |
| Description | Gasoline Torque Amplifier 2WDMarch 28 - April 8, 1955Link: Nebraska Tractor Test 533 file / Drawbar performance / Gear 3 used for power test. / Gear 1 used for pull test. |
| Max power | 45.84 hp (34.2 kW) |
| Max pull | 6,361 lbs (2885 kg) |
Nebraska Tractor Test 535
| Belt fuel use (max) | 3.4 gal/hour (12.9 l/hour) |
|---|---|
| Belt power (max) | 46.61 hp (34.8 kW) |
| Description | Diesel Torque Amplifier 2WDApril 8 - 20, 1955Link: Nebraska Tractor Test 535 file / Drawbar performance / Gear 3 used for power test. / Gear 1 used for pull test. |
| Max power | 41.20 hp (30.7 kW) |
| Max pull | 6,476 lbs (2937 kg) |
Nebraska Tractor Test 572
| Belt fuel use (max) | 5.7 gal/hour (21.6 l/hour) |
|---|---|
| Belt power (max) | 50.72 hp (37.8 kW) |
| Description | LP gas Torque Amplifier 2WDMay 9 - 25, 1956Link: Nebraska Tractor Test 572 file / Drawbar performance / Gear 3 used for power test. / Gear 1 used for pull test. |
| Max power | 47.30 hp (35.3 kW) |
| Max pull | 6,684 lbs (3031 kg) |
Tractor Tests
| Description | NTTL 533: gasoline Torque Amplifier 2WD / NTTL 535: diesel Torque Amplifier 2WD / NTTL 572: LP gas Torque Amplifier 2WD |
|---|
Variants
| 400 Hi-Clear | high-crop |
|---|---|
| 450 | row-crop |
| W-450 | standard-front |
W-450 Serial Numbers
| 1956 | 501 |
|---|---|
| 1957 | 567 |
| 1958 | 1661 |
| Description | FAQ: How to read a serial number table. |
| Final | 2295 |