Was it? or was just the same lifts?
We see the part numbers change in other engines that popularly are said to have '340 cams'.
And maybe those p/n changes mean nothing - something like a change of vendor.
Or they could have been changes in ramps and lobe shapes.
Look at the duration Ken used for the .006" tappet lift, and if I understand that's based on as close as he could make it to what he mapped. 340 cam specs?
So we know its more than that at .004 lift / .006 at the valve.
