Does this prove David Vizard's 128 lsa formula ?

Ant said
So... once I have the duration I'm assuming that number is the off the seat number?

What if the spec of cams to choose from only have the advertised duration at .050 tappet lift?

You really need the seat to seat timing numbers and at what checking height was used to get it.

The engine sees seat to seat timing. Not at .050 timing.