The engine isn't for the next-gen CTS-V, either--this is for a "normal" CTS. The stout TT V-6 will be paired with an eight-speed automatic transmission. No manual transmission option has been announced. Despite the eight-speed gearbox and massive torque, gas mileage is estimated at 17 mpg city and 25 mpg highway.
“The new Cadillac Twin-Turbo brings a new dimension of technologically advanced performance to the all-new 2014 Cadillac CTS sedan,” said David Leone, executive chief engineer. “Delivering power and sophistication, it marks another large step forward in the product-driven expansion of Cadillac.”
Based on the current 3.6-liter V-6 found throughout most of Cadillac's lineup, the new engine is nevertheless significantly redesigned and revised for twin-turbo duty. Updates and changes include:
- 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.
The new twin-turbo V-6 will also find its way into the full-size XTS sedan, where it will sport a six-speed transmission. The 2014 CTS will also offer the current 321-horsepower 3.6-liter normally aspirated V-6 and the turbocharged 272-horsepower 2.0-liter four-cylinder currently offered in the ATS.
Perhaps even more enticing than a brawny (and likely slightly larger) mainstream CTS luxury sedan is the likelihood that a variant of this engine is the powerplant for the upcoming ATS-V--though some reports insist the ATS-V will sport a V-8. We'd be happier with the twin-turbo V-6 solution.
In ATS-V guise, the engine could output 450 horsepower or more--a small gain for a forced-induction engine over the CTS' stock rating. Packaged in the nimble and capable ATS chassis, paired with a manual transmission, with V-grade suspension, aero, and interior upgrades, the ATS-V could well be our next attainable lust object.