18 On the left is an SE 266E cam and on the right is an OE cam. The SE 266E cams have a modern lobe design that allows for higher valve lift for a given duration. The cams provide 0.658-inch valve lift for the intake and exhaust. The cams offer good part throttle ridability while also providing excellent wide-open power due its enhanced overlap design. The lower lobe also has a smaller diameter profile to allow for clearance.