Made it a bit more clear what the above posted numbers stand for.

Advertised Duration in degrees: Intake 268°/ Exhaust 271° at .006" valve lift.
Duration at .050" valve lift: Intake 206° / Exhaust 211°
Camshaft lobe lift: Intake 0.340"/ Exhaust 0.330"
Actual Valve lift: Intake 0.544"/ Exhaust 0.528" when used with 1.60 rocker ratio
Actual Valve lift: Intake 0.561"/ Exhaust 0.545" when used with 1.65 rocker ratio
117.5° Lobe Seperation Angle
121.5° Intake Center Line of camshaft