COMP Cams 102200 Xtreme Energy268H-14 Camshaft Set for 4.6L & 5.4L SOHC Modular 2 Valve Ford SOHC - Xtreme Energy: Mild Street performance, 3.23-3.55 gears. Good torque and power, noticeable idle. Requires custom tuning. 268/274 Advertised Duration, 230/236 Duration @ .050 inch, .500 inch/.500 inch Lift, 114 Lobe Separation Requires cam gear set part #10246SET Requires part #26113-16 valve springs and either 792-16 steel retainers or 791-16 titanium retainers Part #26125-16 high load valve springs also available