The LS9 is a 6.2 L (6,162 cc/376.0 cu in) supercharged engine, based on the LS3; the LS7 block was not used due to the higher cylinder pressures created by the supercharger requiring the thicker cylinder walls of the LS3. Cylinder dimensions are now 4.06 in (103.25 mm) bore with a 3.62 in (92 mm) stroke. It is equipped with an Eaton four-lobe Roots type supercharger. Power output is 638 hp (476 kW) at 6500 rpm and 604 lb·ft (819 N·m) of torque at 3800 rpm.

Applications:

* 2009 Chevrolet Corvette ZR1