2014 Cadillac XTS gets 410-hp twin-turbo V6
General Motors told us so back in March, but it is now official: The twin-turbocharged 3.6-liter V6 announced for the 2014 Cadillac CTS will also join the options list for the 2014 Cadillac XTS. The LF3 engine puts out 410 horsepower and 3