Allis Chalmers 8550 VS McCormick Intl X7.660 specs comparison

Allis Chalmers 8550
General InfosMake | Allis Chalmers |
Model | 8550 |
Country | United states |
Production | From 1978 Until 1981 |
Price | 86,753 USD |
Tractor type | Four wheel Drive (4WD) tractor |
Fuel | diesel |
Service repair manual | Allis Chalmers 8550 Manual |
Dimensions, sizes and tires
AG front tires | 20.8x34 |
AG rear tires | 20.8x34 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 26,400 lbs or 11975 kg |
Length | 285 inches [723 cm] |
Width | 95.5 inches [242 cm] |
Height | 139 inches [353 cm] |
Wheelbase | 126 inches [320 cm] |
Ground clearance | 17 inches [43 cm] |
Turning radius | - |
Rear tread size | 62 to 123 inches |
Front tread size | 62 to 123 inches |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 731 ci or 12.0 L |
Cylinders | 6 cylinders 24 valves |
Engine power | 300 hp or 223.7 kW |
Engine RPM | 2500 (rpm) |
Torque | - | Torque RPM | - |
Fuel type | diesel |
Fuel injection | - |
Fuel tank size | 170 gal or 643.5 L |
Oil capacity | 46 qts or 43.5 L |
Oil change | - |
Starter motor | - |
Starter volts | 12 V |
Parts And Accessories | Allis Chalmers 8550 Parts |
Batteries number | 4 |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | - |
Ground force | negative |
Charging system | alternator |
Charging Volts | - |
Charging Amps | - |
Trans system | Power Director |
Trans type | partial power shift |
Trans gears | 20 forward and 4 reverse |
Clutch system | - |
Wheel drive | 4x4 articulated 4WD |
Final drive | - |
Steering | hydrostatic power |
Braking system | hydraulic wet discs |
Cabin type | Acousta Cab II standard with heat and air-conditioning |
Differentiel lock | - |
System | closed center |
Valves | 3 or 4 |
Pump flow | 74.9 gpm or 283.5 lpm |
SVC flow | - |
Steering flow | - |
Tank capacity | - |
Hydraulic pressure | - |
Max flow | - |
Drawbar type | - |
Claimed power | 210 hp or 156.6 kW |
Drawbar horsepower | 217.92 hp or 162.5 kW |
Fuel consumption | 17.5 gal/hour or 66.2 l/hour |
Pulling power | 26,220 lbs or 11893 kg |
Claimed power | 250 hp or 186.4 kW |
Real power | 253.88 hp or 189.3 kW |
Engine @RPM | - |
PTO Clutch | - |
Rear PTO | independent |
Rear PTO RPM | 1000 (rpm) |
Front PTO | - |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | 17.4 gal/hour or 65.9 l/hour |
Hitch system | - |
Rear hitch | IV/III |
Rear hitch lift | - |
Front hitch | - |
Front hitch lift | - |

McCormick Intl X7.660
General InfosMake | McCormick Intl |
Model | X7.660 |
Country | United states |
Production | From 2013 |
Price | - |
Tractor type | Row Crop tractor |
Fuel | diesel |
Service repair manual | McCormick Intl X7.660 Manual |
Dimensions, sizes and tires
AG front tires | 540/65R28 |
AG rear tires | 650/65R38 |
Lawn front tires | - |
Lawn rear tires | - |
Indus front tires | - |
Indus rear tires | - |
Weight | 14440 lbs or 6549 kg |
Length | 207.1 inches [526 cm] |
Width | 95.7 inches [243 cm] |
Height | 115 inches [292 cm] |
Wheelbase | 108.3 inches [275 cm] |
Ground clearance | 21.7 inches [55 cm] |
Turning radius | - |
Rear tread size | - |
Front tread size | - |
Turning radius | - |
Horsepower and engin specs
Engine capacity | 410.6 ci or 6.7 L |
Cylinders | 6 cylinders 24 valves |
Engine power | 151 hp or 112.6 kW |
Engine RPM | 2200 (rpm) |
Torque | 466.1 lb-ft or 632.0 Nm | Torque RPM | 1500 (rpm) |
Fuel type | diesel |
Fuel injection | electronic high-pressure common rail |
Fuel tank size | 84.5 gal or 319.8 L |
Oil capacity | - |
Oil change | - |
Starter motor | electric |
Starter volts | 12 V |
Parts And Accessories | McCormick Intl X7.660 Parts |
Batteries number | - |
Batteries voltage | 12 V |
Battries Amps | - |
Cold Amps | - |
Ground force | negative |
Charging system | - |
Charging Volts | - |
Charging Amps | - |
Trans system | Pro Drive Creeper |
Trans type | four-speed power shift |
Trans gears | 40 forward and reverse |
Clutch system | wet discs |
Wheel drive | 4x4 MFWD 4WD |
Final drive | - |
Steering | hydrostatic power |
Braking system | wet disc |
Cabin type | Cab standard with air-conditioning |
Differentiel lock | electro-hydraulic front and rear |
System | closed center |
Valves | 3 to 6 |
Pump flow | 32.5 gpm or 123.0 lpm |
SVC flow | - |
Steering flow | 11.6 gpm or 43.9 lpm |
Tank capacity | - |
Hydraulic pressure | - |
Max flow | - |
Drawbar type | - |
Claimed power | - |
Drawbar horsepower | - |
Fuel consumption | - |
Pulling power | - |
Claimed power | - |
Real power | - |
Engine @RPM | - |
PTO Clutch | electro-hydraulic wet discs |
Rear PTO | independent |
Rear PTO RPM | 540 (rpm) |
Front PTO | independent (optional) |
Front PTO RPM | - |
Mid PTO | - |
Mid PTO RPM | - |
Fuel consumption | - |
Hitch system | lower link draft sensing |
Rear hitch | III/IIIN |
Rear hitch lift | 20500 lbs or 9298 kg |
Front hitch | optional |
Front hitch lift | 7716 lbs or 3499 kg |
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Useful links and guides ....
- Allis Chalmers provided us with the latest version of its 8550 service repair manual
- Find All mechanical and electrical parts and accessories of Allis Chalmers 8550 farm-tractor here
- Get your McCormick Intl X7.660 manual book version
- Cabine, electrical And mechanical parts for McCormick Intl X7.660 farm-tractor here