Cadillac CT6 2016-2020 4.2L Engine Specifications
Explore the detailed 4.2L engine specifications for the 2016-2020 Cadillac CT6. This guide covers performance metrics, maintenance tips, and part compatibility for technicians and enthusiasts.
Overview Specifications
This document provides detailed specifications and technical information about the 4.2L engine used in the 2016-2020 Cadillac CT6. It is designed to assist mechanics, enthusiasts, and owners in understanding the engine's features, performance, and maintenance requirements. The document is organized into sections for easy navigation, with subsections breaking down key components and systems. Use the search and navigation instructions below to quickly locate specific details.
How to Use
To find specific information, use the search bar at the top of the page. Enter keywords related to the topic, such as 'horsepower' or 'cooling system,' and relevant sections will be highlighted.
Use the table of contents to jump to major sections. Each section includes subsections with detailed points. Scroll through or use the sidebar to move between sections efficiently.
Key Specifications
Displacement
4.2 L
Horsepower
500 hp
Torque
553 lb-ft
Fuel Economy
16/24 mpg
Oil Capacity
8.5 quarts
Available Specifications
Engine Performance
This section covers the performance characteristics of the 4.2L engine, including power output, torque, and acceleration. It also includes details on fuel efficiency and emissions compliance.
Engine Performance
This section covers the performance characteristics of the 4.2L engine, including power output, torque, and acceleration. It also includes details on fuel efficiency and emissions compliance.
Power and Torque
- Horsepower: 500 hp @ 5,700 rpm
- Torque: 553 lb-ft @ 3,200 rpm
- Compression ratio: 9.8:1
- Redline: 6,500 rpm
Fuel Efficiency
- EPA-estimated city mileage: 16 mpg
- EPA-estimated highway mileage: 24 mpg
- Fuel type: Premium unleaded
- Fuel tank capacity: 19.5 gallons
Engine Design
This section explores the engineering and design features of the 4.2L engine, including its construction, materials, and advanced technologies.
Engine Design
This section explores the engineering and design features of the 4.2L engine, including its construction, materials, and advanced technologies.
Construction
- Engine type: Twin-turbocharged V8
- Block material: Aluminum
- Head material: Aluminum
- Bore x stroke: 86 mm x 89 mm
Advanced Technologies
- Direct fuel injection
- Variable valve timing
- Active thermal management
- Low-friction coatings
Cooling and Lubrication
This section provides details on the cooling and lubrication systems of the 4.2L engine, ensuring optimal performance and longevity.
Cooling and Lubrication
This section provides details on the cooling and lubrication systems of the 4.2L engine, ensuring optimal performance and longevity.
Cooling System
- Liquid-cooled
- Radiator capacity: 12.5 quarts
- Electric cooling fan
- Thermostat-controlled flow
Lubrication System
- Oil capacity: 8.5 quarts
- Oil type: 5W-30 synthetic
- Dry-sump lubrication
- Oil cooler integrated
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
Engine Specifications
Overview
- Type
- V8 Twin-Turbocharged
- Configuration
- 90-degree V-angle
- Platform
- GM Omega platform
- Material
- Aluminum block and heads
- Location
- Front-engine, rear-wheel drive
Dimensions
- Length
- 28.5 inches (724 mm)
- Width
- 30.7 inches (780 mm)
- Height
- 27.6 inches (701 mm)
- Weight
- 449 lbs (204 kg)
- Bore
- 3.74 inches (95 mm)
- Stroke
- 3.07 inches (78 mm)
- Displacement
- 256.4 cubic inches (4200 cc)
Materials
- Engine Block
- Aluminum alloy
- Cylinder Heads
- Aluminum alloy
- Crankshaft
- Forged steel
- Pistons
- High-strength aluminum alloy
- Valve Springs
- High-performance steel
Features
- Performance
-
- 550 horsepower @ 5700 rpm
- 627 lb-ft torque @ 3200 rpm
- Direct fuel injection
- Dual overhead camshafts
- Turbocharging
-
- Twin turbochargers
- Air-to-air intercooler
- Electronic wastegate control
- Variable boost pressure
- Cooling
-
- High-capacity radiator
- Dual electric cooling fans
- Engine oil cooler
- Transmission oil cooler
- Fuel System
-
- High-pressure fuel pump
- Multi-hole fuel injectors
- Variable fuel pressure
- Electronic throttle control
- Ignition
-
- Coil-on-plug ignition
- Iridium-tipped spark plugs
- Variable ignition timing
- Knock sensor control
- Emissions
-
- Catalytic converters
- Exhaust gas recirculation
- Secondary air injection
- Onboard diagnostics
- Lubrication
-
- Dry-sump oil system
- High-capacity oil pump
- Oil cooler
- Synthetic oil recommended
Safety Features
- Engine Protection
-
- Low oil pressure warning
- Over-temperature alert
- Engine misfire detection
- Fuel Safety
-
- Fuel cutoff in crash
- Leak detection system
- Fire suppression
- Emission Control
-
- Oxygen sensors
- Evaporative emissions system
- Catalytic converter protection
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Hydraulic engine mounts
- Sound insulation
- Vibration Control
-
- Balanced crankshaft
- Active engine mounts
- Harmonic dampers
- Thermal Management
-
- Heated oxygen sensors
- Quick warm-up system
- Thermostat control
- Driveability
-
- Smooth idle control
- Linear throttle response
- Adaptive transmission shift
Accessories
- Electrical
-
- High-output alternator
- Maintenance-free battery
- Electronic control module
- Air Management
-
- High-flow air filter
- Intake resonator
- Air intake temperature sensor
- Exhaust
-
- Stainless steel headers
- Dual exhaust system
- Active exhaust valves
Maintenance
- Service interval
- 7,500 miles or 12 months
- Service Items
-
- Oil and filter change
- Air filter inspection
- Spark plug replacement
- Timing belt inspection
- Coolant system flush
- Maintenance Notes
- Use only synthetic 5W-30 oil, check turbocharger condition at 30,000 miles
Warranty
- Bumper To Bumper
- Miles: 36,000Years: 3Coverage: Comprehensive coverage for defects
- Powertrain
- Miles: 60,000Years: 5Coverage: Engine, transmission, and drivetrain
- Emissions
- Miles: 80,000Years: 8Coverage: Catalytic converter, oxygen sensors
- Corrosion
- Miles: 100,000Years: 6Coverage: Perforation from corrosion
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Precision casting for engine block
- CNC machining for cylinder heads
- Robotic assembly for consistency
- Quality Control
- Dimensional Checks: Laser scanningPerformance Testing: Dynamometer testingLeak Testing: Pressure and vacuum checks
- Sustainability Practices
-
- Recycled aluminum usage
- Low-emission manufacturing
- Waste reduction programs
- Production Metrics
- Units Per Day: 150Defect Rate: 0.01%Energy Efficiency: 15% improvement
Service Information for 4.2l engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Air filter inspection
- Spark plug inspection
- Coolant level check
- Engine belt inspection
Use only synthetic 5W-30 oil
- Replace air filter
- Replace spark plugs
- Inspect turbocharger system
- Check timing belt
- Fuel system cleaning
Turbocharger inspection is critical
- Replace timing belt
- Flush coolant system
- Inspect engine mounts
- Check valve clearance
- Replace fuel filter
Major service requires special tools
Common Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the 4.2L engine in the 2016-2020 Cadillac CT6?
What are the technical specifications of the 4.2L engine in the 2016-2020 Cadillac CT6?
The 4.2L engine in the 2016-2020 Cadillac CT6 is a twin-turbo V8 producing 404 horsepower at 5,600 rpm and 400 lb-ft of torque at 2,500 rpm. It features a 4.2-liter displacement, dual overhead cams, and direct fuel injection. This engine is compatible with premium gasoline and is paired with an 8-speed automatic transmission. It is designed for optimal performance and efficiency in the CT6 model range.
Q2 What are the maintenance requirements for the 4.2L engine?
What are the maintenance requirements for the 4.2L engine?
Regular maintenance for the 4.2L engine includes oil changes every 5,000 to 7,500 miles using synthetic oil meeting GM standards. Coolant should be replaced every 50,000 miles, and spark plugs every 100,000 miles. Air filters should be inspected and replaced as needed. Proper maintenance ensures longevity and performance of the engine.
Q3 How do I install or replace components on the 4.2L engine?
How do I install or replace components on the 4.2L engine?
Installation or replacement of engine components requires specialized tools and knowledge. Always consult the service manual. Start by draining fluids and disconnecting the battery. Remove necessary components to access the part. Follow torque specifications and proper reassembly procedures. Ensure all connections are secure and test the system after completion.
Q4 How do I troubleshoot common issues with the 4.2L engine?
How do I troubleshoot common issues with the 4.2L engine?
Common issues include low oil pressure, overheating, or reduced performance. Check oil levels and condition, inspect coolant levels and hoses, and ensure proper fuel quality. Use an OBD-II scanner to identify fault codes. Address issues promptly to prevent engine damage. Consult a certified mechanic if problems persist.
Q5 How can I optimize the performance of the 4.2L engine?
How can I optimize the performance of the 4.2L engine?
Optimize performance by using high-quality synthetic oil and premium fuel. Regularly tune-up the engine, including spark plug replacement and air filter cleaning. Ensure proper tire pressure and wheel alignment. Avoid excessive idling and maintain a consistent driving style. Consider upgrading to performance air filters or exhaust systems for enhanced power.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2016-2020 Cadillac CT6 Service Manual
Coming SoonComprehensive guide covering maintenance, repairs, and technical specifications for the 4.2L engine.
Technical Bulletin: Engine Performance Update
Coming SoonDetails updates and improvements for the 4.2L engine, including software updates and maintenance recommendations.
Cadillac CT6 Parts Catalog
Coming SoonCatalog of genuine parts and accessories for the 2016-2020 CT6, including engine components.
Legal Disclaimer
Important information about using this content
Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.
General Information
Warranty & Liability
The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.
We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
Intellectual Property
About the Author
Expert automotive knowledge and experience
'/%3E%3Cpath d='M60 30a20 20 0 1 1 0 40 20 20 0 0 1 0-40zm0 45c16.5 0 30 7.5 30 16.8V100H30v-8.2c0-9.3 13.5-16.8 30-16.8z' fill='%23404040'/%3E%3C/svg%3E)
Diagnostic
Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.
Repair
Expert in both traditional mechanical repairs and modern vehicle systems.
Additional Expertise
Documentation
Created over 500 detailed repair guides and technical documents.
Training
Conducted technical training sessions and contributed to repair databases.
Certifications & Research
Certifications
- ASE Master Technician Certification
- Advanced Diagnostic Specialist
- Hybrid/Electric Vehicle Systems
- Performance Tuning Expert
Research & Community
Actively researches emerging technologies and contributes to automotive forums.