General Motors released details of its new twin-turbo 3.6 liter V6 engine set for debut in the all-new 2014 Cadillac CTS at the new New York Auto Show next week. With 118 horsepower per liter (88 kW/liter), this engine is the most power-dense six-cylinder unit in the segment.

If you don’t feel like doing the math, this V6 makes 420 horsepower (313 kW) / 430 lb-ft of torque (583 Nm). That is only 30hp short of the new Corvette’s 6.2 liter V8 engine, but it is way more fuel efficient. Thanks to a new eight-speed transmission, it offers the best compromise between performance and fuel economy.

With 90 percent of the torque available from just 2,500 rpm, the new engine is expected to take the 2014 CTS from 0 to 60 mph in 4.6 seconds, and help it reach an eventual 170 mph (274 km/h). Who needs a CTS-V!

This engine will be offered in the 2014 Caddy CTS along with the naturally aspirated 3.6L V-6 rated at 321 horsepower, as well as a 2.0L turbocharged engine rated at an estimated 272 horsepower. It will also make its way to the 2014 XTS.

Technical highlights:

• All-new cylinder block casting
• All-new cylinder head castings
• Strengthened connecting rods
• Machined, domed aluminum pistons with top steel ring carrier for greater strength
• 10.2:1 compression ratio
• Patented, integrated charge air cooler system with low-volume air ducts
• Two turbochargers produce more than 12 pounds of boost (80 kPa)
• Vacuum-actuated wastegates with electronic control valves
• All-new direct injection fuel system
• Tuned air inlet and outlet resonators, aluminum cam covers and other features that contribute to exceptional quietness and smoothness.