One Pratt & Whitney F100-PW-200 turbofan, rated at 12,240 lb.s.t. dry, 14,670 lb.s.t. full military, and 23,830 lb.s.t. with afterburning, Maximum speed Mach 2.05 at 40,000 feet, Service ceiling 55,000 feet, Maximum range 2400 miles, Initial climb rate 62,000 feet per minute.