Valve Clearance on Larger Camshaft and Flat Top Pistons

fishmens67 said

I call it pushrod whip.
That's something a checker spring won't take into account.
All valvetrain components being used at final assembly, should be used to check clearance.
I can usually get a good idea by placing the head on a table before assembly and measuring to valve drop on the stem and and adding gasket thickness and pocket depth, a general idea

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Right. But once you stop turning the crank by hand the pushrod is no longer in “whip”.

No one I know checking p/v or rocker ratio reads the dial indicator while the crank is turning. That’s an idiotic thing to suppose.

Also of note in the Godbold book is that the ratio is not at nominal all time, but when the valve is WFO it better be the nominal ratio or the guy who engineered the rocker doesn’t understand anything but what he read in a book.