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Cadillac Blackwing Engine

The Cadillac Blackwing engine was an internal combustion engine developed by General Motors for Cadillac luxury automobiles.

Engine

The Blackwing engine was the twin-turbo 4.2 liter V8. Assigned GM RPO code LTA, the eight-cylinder, Dual-Overhead Cam (DOHC) gasoline engine is the result of a new clean-sheet design. It was Cadillac’s first-ever twin-turbo V-8 engine, and the luxury marque’s first DOHC V8 since the Northstar engine.

The Cadillac Blackwing engine (LTA) was a clean-sheet design that was developed with the goal of delivering exceptional power density. It also introduces various unique design elements developed to balance performance and efficiency with compact, mass-efficient packaging. The Blackwing launched on the 2019 Cadillac CT6 and was used on the 2020 Cadillac CT6 before being discontinued.

Highlights include the following:

  • Twin-scroll turbochargers
  • Electronic wastegate control
  • Twin water-to-air charge coolers
  • Twin throttle bodies
  • Direct injection
  • Dual-independent camshaft phasing
  • Active Fuel Management / Cylinder Deactivation
  • Variable-pressure oiling system
  • Stop/start technology

The Cadillac Blackwing engine was available in two versions:

  • A regular-output version making 500 horsepower and 574 pound-feet of torque, used in the CT6 4.2L Platinum
  • A high-output variant making 550 horsepower and 640 pound-feet of torque, used in the CT6-V

Applications

The Cadillac Blackwing engine was used in the following vehicles.

Model Year Brand Model Engine Transmission Power hp / kW @ RPM Torque lb-ft / Nm @ RPM
2019 – 2020 Cadillac CT6 Platinum LTA 10L90 500 / 372 @ 5000 574 / 778 @ 3400
2019 – 2020 Cadillac CT6-V LTA 10L90 550 / 410 @ 5000 640 / 867 @ 3400

Production

As exclusively reported by GM Authority, a grand total of 1,200 units of the Cadillac CT6 with the Blackwing engine were produced for the 2019 and 2020 model years.

Discontinuation

After a very short lifespan, the Cadillac Blackwing engine was discontinued due to the discontinuation of the first-generation Cadillac CT6 and the cancellation of other vehicles that would ride on this . About 1,200 units of the engine were produced.

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