BBK Power Plus 65 millimeter Throttle Body for Ford 5.0L for all BBK 1986-1993 GM tuned port 305, 350 throttle bodies are designed to increase airflow and improve horsepower from between 7-12 HP. It depends on the vehicle and application. All BBK performance power plus series throttle bodies are CNC machined from high quality 356 aluminum castings. This ensures perfect OEM quality and fit every time.