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2009 Chevrolet Corvette ZR1
The ZR-1 returned with the 1990 Corvette lineup after an eighteen year hiatus.  This time, it featured a special LT5 engine that had been developed by Lotus (which, at the time, had been a subsidiary of General Motors.) The LT5 engine featured an all-aluminum block, four overhead camshafts, and 32 valves. It also featured an air management system which enabled the car to maintain proper operation while closing off half of its fuel injection system.