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Cat 966 GC specifications

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Short answer

Cat 966 GC: wheel loader.

Selected configuration figures
ConfigurationDocumented field and quantity
966 GC
Net Power - ISO 9249
292 hp
Operating Weight*
48,018 lb
966 GC specification matrix — Engine
Specification966 GC
Engine Power @ 1,600 rpm - ISO 14396:2002321 hp
Engine ModelCat C9.3B
Gross Power @ 1,600 rpm - SAE J1995:2014325 hp
Net Power @ 1,600 rpm - ISO 9249:2007, SAE J1349:2011292 hp
Net Power - ISO 9249292 hp
Bore - ISO 92494.53 in
Stroke5.87 in
Displacement568 in³
Weights
Specification966 GC
Operating Weight*48,018 lb
Buckets
Specification966 GC
Bucket Capacities3.2 - 7.1 m³ (4.25 - 9.25 yd³)
Operating Specifications
Specification966 GC
Static Tipping Load - Full 37° Turn - With Tire Deflection30,072 lb
Static Tipping Load - Full 37° Turn - No Tire Deflection32,233 lb
Breakout Force36974 lbf
Sound
Specification966 GC
With Cooling Fan Speed at Maximum Value - Operator Sound Pressure Level (ISO 6396:2008)75 dB(A)
With Cooling Fan Speed at Maximum Value - Exterior Sound Power Level (ISO 6395:2008)110 dB(A)
With Cooling Fan Speed at Maximum Value - Exterior Sound Pressure Level (SAE J88:2013)78 dB(A)*
With Cooling Fan Speed at 70% of Maximum Value - Operator Sound Pressure Level (ISO 6396:2008)**73 dB(A)
With Cooling Fan Speed at 70% of Maximum Value - Exterior Sound Power Level (ISO 6395:2008)**108 dB(A)***
Transmission and speeds
Specification966 GC
Forward - 14 mph
Reverse - 14.3 mph
Forward - 27.5 mph
Reverse - 28.2 mph
Forward - 313 mph
Reverse - 314.3 mph
Forward - 421.6 mph
Reverse - 422.9 mph
Service Refill Capacities
Specification966 GC
Fuel Tank84.5 gal (US)
DEF Tank6.9 gal (US)
Cooling System14 gal (US)
Crankcase6.1 gal (US)
Transmission14.5 gal (US)
Differential - Final Drives - Front15.1 gal (US)
Differential - Final Drives - Rear15.1 gal (US)
Hydraulic Tank26.7 gal (US)
Hydraulic System
Specification966 GC
Implement Pump TypeVariable Displacement Piston, Load Sensing
Implement System - Maximum Flow @ 2,275 rpm86 gpm
Implement System - Maximum Operating Pressure4,047 psi
Implement System - Maximum Flow 3rd Function63 gpm
Implement System - Maximum Operating Pressure 3rd Function3,304 psi
Hydraulic Cycle Time - Raise from Carry Position5.7 s
Hydraulic Cycle Time - Lower, Empty, Float Down2.6 s
Hydraulic Cycle Time - Total Cycle Time10.1 s
Cab
Specification966 GC
ROPS/FOPSROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards
Brakes
Specification966 GC
BrakesBrakes meet ISO 3450:2011 standards
Dimensions and weight
Specification966 GC
Height - Top of Hood9.2 ft
Height - Top of Exhaust Pipe11.61 ft
B-Pin Height13.11 ft
Height - Top of ROPS11.75 ft
Centerline of Rear Axle to Edge of Counterweight8.1 ft
Ground Clearance1.49 ft
Wheel Base11.65 ft
Centerline of Rear Axle to Hitch5.82 ft
Rack Back - Maximum Lift62 °
Rack Back - Carry50 °
Rack Back - Ground42 °
Lift Arm Clearance12.16 ft
Loader Hydraulic System
Specification966 GC
Hydraulic Cycle Time - Dump, at Maximum Raise1.8 s
Sustainability
Specification966 GC
Recyclability97%
Ratios
Figure966 GC
Fuel tank per engine horsepower0.29 gal
Reference directory classification
Equipment groupwheel loader
The 966 GC beside its neighbours
Base version980C966 GC980G
Engine power270 hp292 hp300 hp
Weight980G: 65,638 lb
Fuel capacity105.7 gal84.5 gal (US)124.2 gal
Wheelbase966 GC: 11.65 ft

966 GC: owner reports

Sources: 3 forum discussions about the Caterpillar 966 wheel loaders (966C, 966G, 966H); heavyequipmentforums.com.
966 GC: forum references — Forum-title search
Forum indexEquipment class queriedNames in the searchMatching titles
Heavy Equipment Forumswheel loaderCat and the 966 line that the 966 GC belongs to (no title names the exact model)104
Topics named by those titles
Title topicTitles
hydraulics10
electrical and sensors7
brakes and steering5
Topic in the titleThreadsShare of matching threads
hydraulics1010%
electrical and sensors77%
brakes and steering55%
transmission and drive55%
fuel system33%
Used market for the 966 GC — Dated first-page listing snapshot
Observation dateListing sourceEquipment searchListings
2026-09-24MachineryTraderCat wheel loader443
ModelListedModel yearsLowest askingHighest askingMedian askingMedian hours
966 GC4431977 to 2025$14,500$506,000$141,5007,747
966 GC: recall reference — Dated CPSC search
Search dateDatabaseNames queriedSearch result
2026-09-24U.S. Consumer Product Safety CommissionCat together with the wheel loader 966 GCNo matching recall in this search

Sources for this page

Evidence classDocument, classification and recorded date
Manufacturer
  • Manufacturer: Cat 966 GC — Caterpillar Inc.. Observed 2026-09-24.
Forum threads
Forum threads
Used-market listings
Federal agency data

Cat 966 GC: Configuration records

966 GC
SpecificationSource figure
Engine
Net Power - ISO 9249292 hp
Displacement568 in³
Engine ModelCat C9.3B
Stroke5.87 in
Engine Power @ 1,600 rpm - ISO 14396:2002321 hp
Gross Power @ 1,600 rpm - SAE J1995:2014325 hp
Net Power @ 1,600 rpm - ISO 9249:2007, SAE J1349:2011292 hp
Bore - ISO 92494.53 in
Weights
Operating Weight*48,018 lb
Buckets
Bucket Capacities3.2 - 7.1 m³ (4.25 - 9.25 yd³)
Transmission and speeds
Reverse - 314.3 mph
Forward - 313 mph
Forward - 14 mph
Forward - 27.5 mph
Forward - 421.6 mph
Reverse - 28.2 mph
Reverse - 14.3 mph
Reverse - 422.9 mph
Hydraulic System
Hydraulic Cycle Time - Total Cycle Time10.1 s
Hydraulic Cycle Time - Lower, Empty, Float Down2.6 s
Implement System - Maximum Operating Pressure4,047 psi
Implement Pump TypeVariable Displacement Piston, Load Sensing
Implement System - Maximum Flow @ 2,275 rpm86 gpm
Implement System - Maximum Flow 3rd Function63 gpm
Implement System - Maximum Operating Pressure 3rd Function3,304 psi
Hydraulic Cycle Time - Raise from Carry Position5.7 s
Service Refill Capacities
DEF Tank6.9 gal (US)
Transmission14.5 gal (US)
Cooling System14 gal (US)
Differential - Final Drives - Rear15.1 gal (US)
Differential - Final Drives - Front15.1 gal (US)
Crankcase6.1 gal (US)
Hydraulic Tank26.7 gal (US)
Fuel Tank84.5 gal (US)
Sound
With Cooling Fan Speed at Maximum Value - Operator Sound Pressure Level (ISO 6396:2008)75 dB(A)
With Cooling Fan Speed at Maximum Value - Exterior Sound Power Level (ISO 6395:2008)110 dB(A)
With Cooling Fan Speed at Maximum Value - Exterior Sound Pressure Level (SAE J88:2013)78 dB(A)*
With Cooling Fan Speed at 70% of Maximum Value - Operator Sound Pressure Level (ISO 6396:2008)**73 dB(A)
With Cooling Fan Speed at 70% of Maximum Value - Exterior Sound Power Level (ISO 6395:2008)**108 dB(A)***
Dimensions and weight
Rack Back - Ground42 °
Height - Top of Exhaust Pipe11.61 ft
Centerline of Rear Axle to Hitch5.82 ft
Lift Arm Clearance12.16 ft
B-Pin Height13.11 ft
Centerline of Rear Axle to Edge of Counterweight8.1 ft
Rack Back - Carry50 °
Operating Specifications
Static Tipping Load - Full 37° Turn - With Tire Deflection30,072 lb
Static Tipping Load - Full 37° Turn - No Tire Deflection32,233 lb
Cab
ROPS/FOPSROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards
Sustainability
Recyclability97%
Additional specifications
Ground Clearance1.49 ft
Rack Back - Maximum Lift62 °
Height - Top of Hood9.2 ft
Wheel Base11.65 ft
Height - Top of ROPS11.75 ft
Breakout Force36974 lbf
BrakesBrakes meet ISO 3450:2011 standards
Hydraulic Cycle Time - Dump, at Maximum Raise1.8 s

Source

More in Cat: 980G, 980C, 980H.