GM updated the CT6 and gave it an incredible new 4.2 TT V8. 550HP and 627 ft lb of toque. It's likely the engine in the new Mid-engine Corvette. That's a torquey beast for sure, way out spins the GT. Should make a great Escalade engine. It would also make for one helluva a Raptor beater. This is definitely one class of engine we know Ford is not developing.