GM LS9 Engine

Last crawled date: 1 year, 11 months ago

The Gen IV LS9 is a supercharged 6,162 cc (6.2 L; 376.0 cu in) 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 bore and stroke of 103.25 mm × 92 mm (4.065 in × 3.622 in). It is equipped with an Eaton four-lobe Roots type supercharger and has a compression ratio of 9.1:1. Power output is rated 638 bhp (647 PS; 476 kW) at 6500 rpm and 604 lb⋅ft (819 N⋅m) at 3800 rpm of torque.[21] Note: GM previously used the LS9 RPO code on 1969 and later Chevrolet trucks (both 2WD and 4WD) including Blazers, Jimmys, Suburbans, as well as car carriers. The original LS9 was a 350 cu in (5.7 L) V-8, developing 160 hp (119 kW) and 245 lb⋅ft (332 N⋅m) of torque. In 2017, Holden Special Vehicles used a modified version of the LS9 in their GTSR W1, the last ever Holden Commodore based vehicle produced in Australia.