2016 Cadillac CT6 To Pack 400-HP Twin-Turbo V-6, Next-Gen V-6 Details

The Cadillac CT6 is one of the most anticipated debuts of the 2015 New York Auto Show, and Cadillac has just honed the edge of our interest: it will pack a 3.0-liter twin-turbocharged V-6 engine good for 400 horsepower and 400 pound-feet of torque.

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That’s the top-line engine offering in the CT6, and it will also feature one other new aspect: cylinder deactivation. Turning off one cylinder per bank, the technology allows the engine to function as a V-4 under light loads. The CT6 engine will also feature stop-start technology. Cadillac claims this is the only twin-turbo V-6 engine in the world with both cylinder deactivation and stop-start.

Sitting behind the new twin-turbo V-6 will be GM’s brilliant Hydra-Matic 9L90 eight-speed automatic transmission, versions of which are also found in the Chevy Corvette and GM’s pickup and SUV lines.

Peak torque in the new CT6 engine will arrive at just 2,500 rpm, holding there until 5,000 rpm, giving the car a strong mid-range torque plateau that should translate to easy pulling power in any gear, as well as an unflustered quality.