Massey-Harris GP
Power
24 hp[B] hp
Production
1930-1936
Engine
Gasoline, 4-cylinder
Transmission
Gear
Weight
3,900 lbs [1769 kg]
Drive
4WD
Introduction
Massey-Harris GP (1930-1936)
The Massey-Harris GP, standing for General Purpose, was the first tractor model designed entirely by the Massey-Harris company. Produced between 1930 and 1936 in Racine, Wisconsin, this 24-horsepower tractor was engineered to provide versatile performance for various agricultural tasks.
Engine and Performance
The tractor is powered by a 4-cylinder Hercules overhead-valve (OHV) gasoline engine with a displacement of 226 cubic inches (3.7 liters). Featuring liquid cooling, the engine operates at a rated speed of 1200 RPM. In 1936, the final year of production, the OHV engine replaced the earlier flathead OOC engine design.
Drive and Transmission
The Massey-Harris GP is distinguished by its 4x4 four-wheel drive system, providing traction for field work. The power is managed through a gear-type transmission offering a basic configuration of 3 forward gears and 1 reverse gear.
Dimensions and Operator Station
The unit weighs 3,900 lbs (1,769 kg) and measures 119 inches (302 cm) in length, with a ground clearance of 30 inches (76 cm). The tractor features an open operator station design typical of its era. It is equipped with 38x8 steel wheels for both front and rear axles, with adjustable tread widths for both front and rear to accommodate different row spacings.
Conclusion
With 3,000 units manufactured, the Massey-Harris GP represents a significant milestone in the company's transition to proprietary tractor design. Its 4WD capability and 24-horsepower output made it a robust utility machine for the farming practices of the 1930s, and it remains a notable piece for vintage agricultural machinery collectors.
Massey-Harris GP Manuals & Documentation
Download the manuals and documentation available for the Massey-Harris GP: repair and workshop manuals, operator's handbooks, spare-parts catalogs and technical leaflets — free PDF files.
Archive documentation provided for reference, hosted by Tractor-Info.
Production Information of Massey-Harris, GP
- Four-wheel Drive (4WD) tractor
- The Massey-Harris 15/22 GP General Purpose tractor was the first Massey-Harris designed tractor.
- Built in Racine, Wisconsin, USA
| Manufacturer | Massey-Harris |
|---|---|
| Original price | $1,000 |
| Total built | 3,000 |
Dimension and Tires Information of Massey-Harris, GP
| Rear tread | 66 to inches [167 to 0 cm] |
|---|---|
| Length | 119 inches [302 cm] |
| Front tread | 40 to inches [101 to 0 cm] |
| Ground clearance | 30 inches [76 cm] |
| Height | 55 inches [139 cm] |
| Front tread | 76 to inches [193 to 0 cm] |
| Front tread | 60 to inches [152 to 0 cm] |
| Weight | 3,900 lbs [1769 kg] |
| Rear tread | 76 to inches [193 to 0 cm] |
| Rear tread | 60 to inches [152 to 0 cm] |
| Rear tread | 40 to inches [101 to 0 cm] |
| Front tread | 66 to inches [167 to 0 cm] |
| Ag front | 38x8 steel |
|---|---|
| Ag rear | 38x8 steel |
Engine Specifications of Massey-Harris, GP
- Hercules OHC
- The overhead-valve (OHV) Hercules engine replaced the flathead OOC in 1936, the final year of the GP production.
- Liquid-cooled
- Gasoline
- 4-cylinder
| Bore/Stroke | 4.00x4.50 inches [102 x 114 mm] |
|---|---|
| Rated RPM | 1200 |
| Displacement | 226 ci [3.7 L] |
| Coolant capacity | 16 qts [15.1 L] |
Transmission Information of Massey-Harris, GP
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 3 forward and 1 reverse |
Mechanical Specs of Massey-Harris, GP
- Open operator station.
| Drive | 4x4 4WD |
|---|
Power Information of Massey-Harris, GP
- Https://www.tractordata.com/farm-tractors/003/8/8/3880-massey-harris-gp-tests.html
Where it sits
With 24 hp[B] HP, the Massey-Harris GP sits between 16 Pacer (21 HP) and No. 1 12-25 (27 HP) in Massey-Harris's range. Its power puts it in the 24th percentile of 1930s models in our database (235 machines).
Frequently asked questions
How much horsepower does the Massey-Harris GP have?
The Massey-Harris GP delivers 24 hp[B] HP.
What years was the Massey-Harris GP produced?
The Massey-Harris GP was produced in 1930-1936.
What engine does the Massey-Harris GP have?
The Massey-Harris GP is powered by a Gasoline, 4-cylinder engine.
What transmission does the Massey-Harris GP use?
The Massey-Harris GP uses a Gear transmission.
How much does the Massey-Harris GP weigh?
The Massey-Harris GP weighs 3,900 lbs [1769 kg].
Is the Massey-Harris GP 4WD?
The Massey-Harris GP is available in 4WD.