higher cylinder pressures created by the supercharger requiring the thicker cylinder walls of the LS3. Cylinder dimensions are now bore and stroke of . It is equipped with an Eaton four-lobe Roots type supercharger and has a compression ratio of 9.1:1. Power output is rated at 6500 rpm and at 3800 rpm of torque. 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 V8, developing and 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. Applications: 2009–2013 Chevrolet Corvette ZR1 LSA The supercharged 6.2L LSA is similar to the LS9 and debuted in the 2009 CTS-V. The LSA has been SAE certified at at 6100 rpm and at 3800 rpm. GM labeled it "the most powerful ever offered in Cadillac's nearly 106-year history". The LSA features a smaller capacity supercharger rather than the variant of the LS9. Other differences include a slightly lower 9.0:1 compression ratio, single unit heat exchanger and cast pistons. A and version of the LSA engine is used in the 2012 Camaro ZL1. On May 15, 2013, Holden Special Vehicles announced that this version of the LSA engine will also be used in the GEN-F GTS. 2009–2015 Cadillac CTS-V 2012–2015 Chevrolet Camaro ZL1 2014–2017 HSV GTS GEN-F Generation V (2013–present) In 2007, wardsauto.com reported that the LS3 (used by 2008 Chevrolet Corvette) and Vortec 6000 LFA (used by 2008 Chevrolet Tahoe Hybrid) engines would be the final two designs in the Generation IV small-block engine family, and the future designs would be part of the Generation V engine family. An experimental engine was built based on L92 engine from Cadillac Escalade, GMC Yukon Denali and Hummer H2, and reported to generate on gasoline via direct fuel injection, increased compression ratio to 11.5:1, and a modified engine controller. The first Gen V LT engine was the LT1, announced in 2012 as the initial powerplant for the redesigned Corvette C7, succeeding the LS engine family. The new logo formally adopts the Small Block name for the engines. The fifth generation of the iconic GM small block engine family features the same cam-in-block architecture and bore centers (the distance between the centers of each cylinder) that were