Everything we know about the 2020 Chevy Silverado 3.0L Duramax Turbo Diesel I-6 Engine

2020 Chevrolet Silverado 3.0l Duramax Turbo Diesel I-6 Engine Specs

FUEL EFFICIENCY
Est. 33 MPG Highway
 
CAPABLE HORSEPOWER
277 Horse Power
 
POWERFUL TORQUE
460 LB.-FT.
 
ADVANCED TECHNOLOGY

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The 3.0L Duramax Turbo Diesel I-6 engine offers a new powertrain choice that exhibits impressive efficiency, power and advanced technology.

Fuel Efficiency

10-Speed Transmission

• 10-speed transmission helps keep the engine RPMs in the middle of its power band for maximum power and fuel efficiency
• Intelligent controls automatically adjust to the driver’s needs for ideal operation and response
• 10 speeds provide a more refined driving experience with smoother gear changes
• Smaller ratio steps between gears allow the engine to operate more efficiently

Combustion System

• 15.0:1 compression ratio with up to 10 injections per cycle per injector means the engine works harder when needed without sacrificing fuel efficiency
• High compression and multiple injections contribute to both efficiency and smooth operation

Direct Common Rail Fuel Injection System

• High pressure fuel injectors provide a super-fine spray, for efficient combustion that enhances both performance and mileage

Lubrication System

• Electronically controlled variable displacement oil pump for maximum engine efficiency
• Pistons cooled by oil jets using 7 quarts of low-friction dexos® 0W20 diesel engine oil

Horse Power and Torque

Fast Response Turbocharger

• Low-end power is what diesel engines are all about, and the Duramax’s turbo ensures there’s plenty of power on tap
• Variable geometry turbocharger maximizes boost (up to 29 PSI) at low engine RPM—perfect for effective freeway merging
• Ball bearing shaft and short air circuit eliminate turbo lag

Lightweight and Compact

• Lightweight components improve efficiency while compact engine design allowed Silverado’s engineers to design a naturally-balanced inline 6-cylinder engine; there’s no need for complex balance shafts, unlike the competition’s V6 diesels
• Engine block is made from lightweight cast aluminum alloy, making it more efficient with less weight
• Camshaft drive on rear of engine allows an inline 6-cylinder engine design

Cylinder Head and Valvetrain

• Inline design means fewer moving parts with better engine response and reliability, while retaining the “breathing” efficiency of four valves per cylinder
• Fewer components produce less friction and improve acceleration
• Four valves per cylinder provide increased airflow and more power
• Chain-driven camshafts and fuel pump for durability in the Silverado 3.0L Duramax

High Performance Engine Components

• Engine materials, dimensions and manufacturing processes were all carefully selected to ensure the long service life you expect from a Duramax diesel
• Forged steel crankshaft with rolled fillets for durability
• Induction hardened crank pins and timing drive sprocket
• Forged steel fractured connecting rods
• 30mm-diameter piston pins with diamond-like carbon coating
• Trimetal main and rod bearings

Advanced Technology

Active Thermal Management

• Even the cooling system pitches in to ensure the engine, transmission, turbocharger, intake air, fuel, DEF and passengers are all kept at optimum temperatures
• Engine warms up quickly while maintaining ideal performance and minimal fuel consumption
• Faster warm-up to reduce friction and optimize engine and transmission temperatures

Water Charge Air Cooler

• Charge Air Cooler cools compressed air going into the engine for even better power
• Installed on the Silverado 3.0L Duramax for quick response with dedicated cooling circuit and electric pump
• Reduces intake air temperature by up to 130° F

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