If you browse the Chevy catalog right now for "LS7," you'd find it housed in the home of the company's flagship vehicle, the Corvette. And not just in the Corvette, it's in the Corvette ZO6. The 427 7.0-liter LS7 engine is Chevy's most powerful small-block V8 ever. Lightweight and naturally aspirated, the LS7 currently produces 505 horsepower and 470 lb-ft. of torque. That trademark for "Z28" that GM recently filed makes a little more sense now, doesn't it?