1994 Ferrari Tipo 043 3.5 V12 engine; the most powerful 3.5-litre engine in F1 history By the end of the 1994 season, Ferrari’s Tipo 043 V12 was putting out around 850 hp (634 kW) [27] @ 15,800 rpm, which is to date the most-powerful naturally-aspirated V12 engine ever used in Formula One.
An EV Ferrari, STILL LAUGHING, smart move Ferrari!!!
..and the screaming howl of that motor is still the greatest man-made music to date.
I guess some people would rather listen to a whining golf cart.
Under Pressure: The Importance of Getting the Right Amount of Spring Pressure
https://www.enginebuildermag.com/2017/07/pressure-importance-getting-right-amount-spring-pressure/
At some point on the RPM scale, positive air pressure must be assisted, and the valve springs have to be the extraordinary springs that survived break-in testing.
I would assume that Ferrari uses a special purpose machine for breaking-in valve springs.