6 material differences · fewer than 12
Tractor oneJohn Deere 84001994–1998No measured PTO figureTractor twoJohn Deere 8400 T1997–1998No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (30%); the drive differs (4WD; Tracks); the 8400 T is on tracks, not an alternative to an ordinary tractor. The figures below are side by side so you can judge them yourself; each says whether it was measured, claimed or declared by its source.
Field by field
6 material differences · 8 fields identical or within 5%, which is not counted as material
| Field | 8400 | 8400 T | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 256.7 hp | 256.7 hp | — |
| Engine declared | John Deere-PowerTech 6.081 HRW-01 | John Deere-PowerTech 6.081 HRW-03 | differs |
| Displacement declared | 8.12 L | 8.13 L | — |
| Maximum torque declared | 777 lb·ft · 1,054 N·m | 795 lb·ft · 1,078 N·m | — |
| Transmission | |||
| Top speed declared | 23.6 mph · 38 km/h | 18.6 mph · 30 km/h | +27% 8400 |
| Clutch declared | Pedal-operated hydraulic-wet John Deere multi-disc clutch | Pedal operated hydraulic wet John Deere multi-disc clutch | differs |
| Hydraulics & hitch | |||
| Hydraulic centre declared | — | Closed centre | — |
| Hydraulic control declared | Load sensing | Load sensing | — |
| Pump flow declared | — | 31.0 gpm · 117.3 L/min | — |
| Rear PTO speeds declared | 1000 rpm | 1000 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 19,191 lb · 8,705 kg | 25,000 lb · 11,340 kg | +30% 8400 T |
| Maximum permissible mass declared | 30,865 lb · 14,000 kg | — | — |
| Wheelbase declared | — | 89.0 in · 2,260 mm | — |
| Length declared | 214.4 in · 5,447 mm | 216.0 in · 5,487 mm | — |
| Width declared | 118.6–130.4 in · 3,012–3,312 mm | 102.0–113.0 in · 2,591–2,870 mm | differs |
| Height, over the cab declared | 121.7 in · 3,090 mm | 123.4 in · 3,135 mm | — |
| Ground clearance declared | 15.9 in · 405 mm | 14.2 in · 360 mm | +13% 8400 |
| Fuel tank declared | 541.0 qt · 512.0 L | 519.9 qt · 492.0 L | — |
John Deere 8400 sources
Source
- Source: Traktorenlexikon, “John Deere 8400”
John Deere 8400 T sources
Source
- Source: Traktorenlexikon, “John Deere 8400T”
- Source: Traktorenlexikon, “John Deere 8200T”
- Source: OECD test report 1783, 1998