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

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

2020 Chevy Silverado 3.0L Duramax Turbo Diesel I-6 Engine

Est. 33 MPG Highway

277 Horse Power
460 LB.-FT.

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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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