"Revolutionary 12-Rotor Rotary Engine Unleashed"
Apex Manufacturing and Design has built a twelve-rotor engine for speed boat racing, which is the exact shape of a Big Block Chevy. The engine made 800 lb-ft of torque at 2000 rpm and can spin past 9000 rpm. The need for it to run at wide-open-throttle for hours sounds like solid ground for a rotary design, which usually works best at high rpm.