cylinder heads sourced from the L92, a more aggressive camshaft with lift, a 10.7:1 compression ratio, a revised valvetrain with offset intake rocker arms, a high-flow intake manifold and /hr fuel injectors from the LS7 engine. The L76/L92/LS3 cylinder heads use intake valves, and exhaust valves. Improved manufacturing efficiency makes these heads cheaper to produce than the outgoing LS6 heads, significantly undercutting the price of aftermarket heads. The large valves, however, limit maximum rpm - 6000 in the L76 (with AFM), and 6600 in the LS3 (with hollow stem valves). In addition to the above, a dual-mode exhaust package with a bypass on acceleration was available on C6 Corvettes. The dual-mode exhaust uses vacuum-actuated outlet valves, which control engine noise during low-load operation, but open for maximum performance during high-load operation. The system is similar to the C6 Z06, but uses a diameter exhaust compared to the Z06's . Power is boosted to and with this option. A similar system was optional on later model 5th generation Chevrolet Camaros and standard on the 2016–2017 Chevrolet SS, but no horsepower or torque increases were advertised on those vehicles. LS3 engines found in manual transmission-equipped C6 Corvette Grand Sport models also received a dry sump oiling system similar to the one fitted to LS7-equipped Corvettes. From April 2008, Australian performance car manufacturer HSV adopted the LS3 as its standard V8 throughout the range, replacing the LS2. The LS3 received modifications for its application to HSV E Series models, producing . The LS3 engine in the E Series II GTS (released September 2009) was upgraded to produce . All HSV MY12.5 excluding the base Maloo and Clubsport variants have been upgraded to produce . From September 2015 Holden introduced the LS3 in all V8 models of the VF II Commodore and WN II Caprice-V, replacing the 6.0L L77. 2008–2013 Chevrolet Corvette 2011 Jensen Interceptor R 2010–2015 Chevrolet Camaro SS (manual only) 2015 Drakan Spyder 2008–2017 Various Holden vehicles including: 2009 Pontiac G8 GXP 2014–2017 Chevrolet SS L99 The L99 is derived from the LS3 with reduced output but adds Active Fuel Management (formerly called Displacement on Demand) and variable valve timing, which allows it to run on only four cylinders during light load conditions. Applications: 2010–2015 Chevrolet Camaro SS (Automatic Transmission) LS9 The Gen IV LS9 is a supercharged engine, based on the LS3; the LS7 block was not used due to the