Turbo Corvette C3
The late 1970s were a sad time for American performance, and all cars lost their power and became increasingly boring. Corvette wasn’t the exception, and to try to gain some power back, Corvette engineers designed the Turbo Corvette C3 as a factory prototype (via Car and Driver).
The car used L82 350 V8 engine with a turbocharger and Cadillac’s fuel injection. Allegedly, the 1979 Turbo Corvette prototype could deliver up to 300 HP, which was insane by the standards of the day. However, you needed racing 103-octane fuel to produce such power.