3.9 L LZ9 V6

The LZ9 3900 has roller rocker arms, a variable length intake manifold, and Variable Cam Timing, a novelty on a pushrod engine. A computer-controlled plenum divider, along with the VVT cam function, improves efficiency across a broader RPM range. It produces 240 hp (179 kW) and 240 lb⋅ft (325 N⋅m) torque, with a wide torque curve. 90% of the torque is available from 1500 rpm to 5500 rpm.