Allis Chalmers 8550 Technical specs


Make Allis Chalmers
Model 8550
Company country United states
Production years From 1978  Until 1981
Tractor type Four wheel Drive (4WD) tractor
Fuel diesel
Price 86,753  USD
Total build -
Service repair manual Allis Chalmers 8550 Manual
AG front tires 20.8x34
AG rear tires 20.8x34
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]
Rear tread size 62 to 123 inches
Front tread size 62 to 123 inches
Engine size 731 ci or 12.0 L
Number of cylinders 6 cylinders 24 valves
Horsepower 300 hp or 223.7 kW
Power RPM 2500 (rpm)
Engine torque -
Engine torque RPM -
Fuel type diesel
Fuel tank capacity 170 gal or 643.5 L
Compression ratio 16.25:1
Bore stroke 5.25x6.25 inches or (133 x 159 mm)
Oil tank capacity 46 qts or 43.5 L
Coolant tank capacity 72 qts or 68.1 L
Number of batteries 4
Battery voltage 12 V
Electric ground force negative
Electric charging system alternator
Engine starter volts 12 V
Parts And Accessories Allis Chalmers 8550 Parts
Transmission system Power Director
Transmission type partial power shift
Transmission gears 20 forward and 4 reverse
Wheel drive 4x4 articulated 4WD
Steering system hydrostatic power
Braking system hydraulic wet discs
Cabin type Acousta Cab II standard with heat and air-conditioning
Hydraulic system closed center
Number of valves 3 or 4
Pump flow rate 74.9 gpm or 283.5 lpm
Drawbar claimed power 210 hp or 156.6 kW
Drawbar real power 217.92 hp or 162.5 kW
Drawbar fuel consumption 17.5 gal/hour or 66.2 l/hour
Max drawbar pull 26,220 lbs or 11893 kg
PTO claimed power 250 hp or 186.4 kW
PTO real power 253.88 hp or 189.3 kW
PTO clutch system -
Rear PTO system independent
Rear PTO RPM 1000 (rpm)
Front PTO system -
PTO fuel consumption 17.4 gal/hour or 65.9 l/hour
Hitch control system -
Rear hitch IV/III
Rear hitch lift -



Detailed review of Allis Chalmers 8550

Allis Chalmers produced its 8550 farm tractor model From 1978  Until 1981 in United states this exact model was priced at 86,753 USD with a Acousta Cab II standard with heat and air-conditioning cabin.
Talking dimensions and weight, this model weighs 26,400 lbs or 11975 kg has 95.5 inches [242 cm] of width, 285 inches [723 cm] of length and 139 inches [353 cm] of height while maintaining a wheelbase of 126 inches [320 cm] and a ground clearance of 17 inches [43 cm] the front tread is about 62 to 123 inches while the rear tread is 62 to 123 inches .
This tractor can fit ag tires of 20.8x34 front and 20.8x34 back .
This Allis Chalmers 8550 is powerd by a diesel engine it has 731 ci or 12.0 L 6 cylinders 24 valves ,it can produce 300 hp or 223.7 kW at 2500 (rpm), the fuel tank capacity is 170 gal or 643.5 L.
This machine has 4x4 articulated 4WD wheel drive system,20 forward and 4 reverse Power Director transmission system.

- 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