Hennessey dramatically increased power output from the Camaro’s LT4 V8 engine, promising no less than 1,000 horsepower at 6,400 rpm and 966 pound-feet of torque at 4,400 rpm. The extra 350 horsepower comes from a larger supercharger and intercooler system, producing 14 psi of boost pressure. Other modifications include ported cylinder heads, new camshafts, long-tube stainless exhaust headers and custom engine management calibration. The Exorcist is not just a mile racer. It’s a well-rounded super muscle car that is just as happy on a road course as it is on the dragstrip and street.