The COMP Cams XE270AH-13 Xtreme Energy cam set for Ford 4.6/5.4L SOHC engines with PI heads is tuned for hot-street applications, offering stronger midrange power. It performs best with a higher final drive ratio and a 2000+ rpm stall converter, and typically requires intake and exhaust upgrades plus a computer tune to manage its noticeable idle and extract the cam’s full benefits.
COMP Cams Camshaft Set F4.6S XE270AH-13