Cadillac has produced two 3.6 liter V-6 engines since being purchased by GM in 1909. The first engine produced was the 3.6 VVT (Variable Valve Timing) and the second engine produced was the 3.6 VVT DI (Variable Valve Timing, Direct Injection).
3.6 Liter VVT
The first production of the 3.6 liter includes Variable Valve Timing to speed up or slow down the valve timing as needed. This engine produces 255 horsepower at 6,500 rpm and 254 ft.-lbs. of torque at 2,800 rpm.