7 material differences · fewer than 12
Tractor oneBührer GM-29 Super-Six (A)1968–1975No measured PTO figureTractor twoJ.I. Case 931 GP1959–1969No measured PTO figure
Which should you choose?
Read our verdict on the GM-29 Super-Six (A) and the 931 GP → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
7 material differences · 2 fields identical or within 5%, which is not counted as material
| Field | GM-29 Super-Six (A) | 931 GP | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 98.6 hp | 83.0 hp | +19% GM-29 Super-Six (A) |
| Engine declared | Mercedes-Benz OM 352 | — | — |
| Displacement declared | 5.67 L | — | — |
| Maximum torque declared | 188 lb·ft · 255 N·m | — | — |
| Transmission | |||
| Top speed declared | 13.7 mph · 22 km/h | 15.5 mph · 25 km/h | +14% 931 GP |
| Clutch declared | — | Pedal-operated dry CASE single-disc clutch | — |
| Hydraulics & hitch | |||
| Pump flow declared | 5.0 gpm · 18.8 L/min | 15.5 gpm · 58.7 L/min | +212% 931 GP |
| Rear PTO speeds declared | 540 rpm | 540/1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 6,195 lb · 2,810 kg | 8,915 lb · 4,044 kg | +44% 931 GP |
| Wheelbase declared | 98.4 in · 2,500 mm | 108.0 in · 2,743 mm | +10% 931 GP |
| Length declared | 157.5 in · 4,000 mm | 162.0 in · 4,115 mm | — |
| Width declared | 74.4 in · 1,890 mm | 85.2 in · 2,165 mm | +15% 931 GP |
| Ground clearance declared | 16.5 in · 420 mm | 17.0 in · 432 mm | — |
| Turning radius, braked declared | 13.5 ft · 4.13 m | 10.8 ft · 3.30 m | +25% GM-29 Super-Six (A) |
| Fuel tank declared | — | 95.9–120.0 qt · 90.8–113.6 L | — |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
Bührer GM-29 Super-Six (A) sources
- Source: Traktorenlexikon, “Bührer GM 29 SUPER-SIX (A)”
- Source: Traktorenlexikon, “Mercedes-Benz MB trac 1000”
J.I. Case 931 GP sources
- Source: Traktorenlexikon, “Case 931”