With a .360 lobe lift, we got .567 gross lift measured at the retainer instead of the expected .540 lift.
With a .3706 lobe lift, we got a .588 gross lift instead of a .556 lift.
This should help out a bit with the new heads but I was scratching MY head a bit till I remembered some old emails on the subject.
The measurements were made with a mag base mount dial indicator positioned on a plate that bolted to the valve cover bolt holes and a set of checking springs. The dial indicator was solidly mounted and checked for alignment with the valve stem.
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