of 2005 and is the lightest of all Corvette models. The Z06 was equipped with the largest-displacement small-block engine ever produced, a new V8 engine codenamed the LS7. The engine has a power output of at 6,300 rpm and at 4,800 rpm of torque. Until the introduction of LT6 engine in October 2021, LS7 was the most powerful production naturally aspirated engine made by General Motors. In addition to the larger displacement engine, the Corvette Z06 has a dry sump oiling system, and connecting rods made out of titanium alloy. The frame of the Z06 is constructed from aluminum, saving over the standard steel frame. Other weight saving measures such as balsa wood/carbon fiber composite floors and a magnesium alloy engine cradle were used. The Z06's body differentiates itself from the standard Corvette with its larger front and rear fenders and an intake inlet scoop on the front bumper. The front fenders are constructed with carbon fiber and the rear fenders contain ducts to aid in cooling the rear brakes. The Z06 weighed , giving it a weight to power ratio of , allowing it to achieve a fuel economy of in the city and on the highway. The Z06 was the official pace car for both the 2006 Daytona 500 and the Indianapolis 500 race. Car and Driver recorded a 0- acceleration time of 3.6 seconds and 1/4 mile in 11.7 seconds at in October 2005. The Z06 contains the following enhancements over the standard C6 Corvette: Hand-built LS7 V8 with dry sump oiling system Aluminum chassis with fixed roof Larger/stiffer anti-sway bars Stiffer springs and shocks Larger rear spoiler and front splitter Transmission cooler Unique front fascia with intake inlet Wider carbon fiber front and fiberglass rear fenders Functional front and rear brake ducts for added brake system cooling Unique light weight forged aluminum 18-inch front and 19-inch rear wheels; painted finish standard and chromed finish optional Wider 275/35ZR18 tires in the front and wider 325/30ZR19 tires in the rear Larger 6-piston front and 4-piston rear calipers, including cross-drilled front rotors and rear rotors Optional 1LZ, 2LZ, and 3LZ trim packages. For the 2011 model year, the Z06 carbon edition was introduced, which carries over multiple parts from the high performance ZR1 including carbon ceramic brakes, active suspension, and other carbon fiber aerodynamic pieces. Only 500 were planned for production and actual production numbers were much lower, in