And now, less than a week before its unveiling, GM Authority has obtained new information about an upcoming GM twin-turbo engine ... Small Block / push-rod LT engine family, which includes ...

The LT nomenclature suggests the 7 belongs to the ... of the mid-engine Corvette is displacement. Based on the twin-turbo V8 that Cadillac debuted in the Escala Concept, it could displace 4.2 ...

All these upgrades are enough to coax the 765 LT's twin-turbo V8 in producing an astonishing 1,000 horsepower, enough to push the car from zero to 60 mph in 2.1-seconds. Other changes include ...

Unfortunately, however, the long-due twin-turbo LT5 V8 is nowhere to be found. That said, the 4.2-liter twin-turbo V8 will most probably be ready for production by the time the 2018 Cadillac CT6 ...