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Years in Production / 1928–1935
John Deere
GP
Explore the specifications, hardware, and original references for the John Deere GP.
20hp
Engine estimate · from belt
2WD Only
Drive
1928–1935
Production years
John Deere
Manufacturer
GP / 01
At a glance
Overview
1928 - 1935
Two-Cylinder Letter Series
Row-Crop tractor
Production
Row-Crop tractor
Built in Waterloo, Iowa, USA
Original price was $1,200 in 1935
- Manufacturer
- John Deere
- Total Built
- 30,535 (GP)
- Total Built
- 5,103 (GPWT)
- Total Built
- 717 (GPO)
Mechanical
Two-wheel drive
Manual steering
Open operator station.
Serial Numbers
FAQ: How to read a serial number table.
- 1928
- 200211
- 1929
- 201336
- 1930
- 212038
- 1930
- 5000-5202 (GP-P)
- 1931
- 223803
- 1931
- 15000 (GP-O)
- 1932
- 228666
- 1932
- 15226 (GP-O)
- 1933
- 229051
- 1933
- 15387 (GP-O)
- 1934
- 229216
- 1934
- 15412 (GP-O)
- 1935
- 230514
- 1935
- 15589 (GP-O)
- Final
- 230745
- Final
- 15732 (GP-O)
GP / 02
Under the hood
Engine Detail (Option 1)
John Deere
kerosene
2-cylinder
liquid-cooled inline
Original engine, used until 1931. Water-injection system was used to prevent detonation ("knocking") with low quality fuels.
- Displacement
- 311.6 ci5.1 L
- Bore Stroke
- 5.75x6.00 inches146 x 152 mm
- Rated Rpm
- 900
- Coolant Capacity
- 36 qts34.1 L
- Fuel Type
- kerosene
- Cylinders
- 2
- Cooling
- liquid-cooled inline
Engine Detail (Option 2)
John Deere
kerosene
2-cylinder
liquid-cooled
The new engine was introuded in 1931 on GP serial number 224100. It had lower compression but with a quarter-inch larger bore, producing slightly more power with better fuel economy. The lower compression eliminated the pre-ignition problem when using low-quality fuel, so the water-injection system was eliminated.
- Displacement
- 339.3 ci5.6 L
- Bore Stroke
- 6.00x6.00 inches152 x 152 mm
- Rated Rpm
- 950
- Coolant Capacity
- 36 qts34.1 L
- Fuel Type
- kerosene
- Cylinders
- 2
- Cooling
- liquid-cooled
Engine Options
John Deere 5.1L 2-cyl kerosene
John Deere 5.6L 2-cyl kerosene
- Fuel Tank
- 16 gal60.6 L
- Aux Fuel
- 2 gal7.6 L
Engine Options
John Deere 5.1L 2-cyl kerosene
John Deere 5.6L 2-cyl kerosene
GP / 03
Gears & controls
Transmission
- Transmission Type
- unsynchronized gear
- Gears
- 3 forward and 1 reverse
John Deere Gp Transmission
3-speed unsynchronized gear
GP / 04
Size. Stance. Footprint.
Dimensions And Tires
- Weight
- 3,600 lbs1632 kg
- Front Tire
- 24x6
- Rear Tire
- 42.75x10
Serial Number Location
Below gear shift lever
Tires And Tracks
- Front Ag
- 24x6 steel
- Front Ag
- 6.00x16
- Rear Ag
- 42.75x10 steel
- Rear Ag
- 10.00x32
GP / 05
Tractor Photos
See it in action
Videos
Watch John Deere GP videos from their original YouTube creators.
GP / 07
Tests (NTTL)
Tractor Tests
NTTL 153: 311 kerosene 3-speed 2WD
NTTL 190: 339 distillate 3-speed 2WD
Nebraska Tractor Test 153
311 kerosene 3-speed 2WDOctober 22 - 29, 1928
Drawbar performance
- Id
- 153
- Belt Power Max
- 24.97 hp18.6 kW
- Belt Fuel Use Max
- 2.7 gal/hour10.2 l/hour
- Max Power
- 17.24 hp12.9 kW
- Max Pull
- 2,489 lbs1129 kg
Nebraska Tractor Test 190
339 distillate 3-speed 2WDMay 4 - 15, 1931
Drawbar performance
- Id
- 190
- Belt Power Max
- 25.36 hp18.9 kW
- Belt Fuel Use Max
- 2.7 gal/hour10.2 l/hour
- Max Power
- 18.86 hp14.1 kW
- Max Pull
- 2,853 lbs1294 kg