Our buddy Scott Brown at Competition Components built a killer Buick engine.. a 464 cubic-inch street engine that made outstanding power - 703 HP at 6000 RPM - 653 @ 5200 RPM - running on E85.   This thing made 600+ lb/ft of torque from 4200-6000 RPM, and is completely streetable!   



Check out the build blog entry at Scott's site - Competition Components for more info!