There’s more to it. In a fascinating paper entitled, “Development of Valve Train for Formula One Engine,” Honda engineers Shuichi Hayakawa, Kazushi Ogiyama, and Masanori Tate describe many steps taken in trying to stabilize an F1 valve train. They note that once this was done to the degree possible, the effects of torsional oscillations (shaft windup) and crank speed fluctuations from cylinder firing and spring resistance, they were able to make the existing cam profile operate 1,500 revs higher than before. Why? Because, before being stabilized, the cam lobes were not rotating smoothly but micro-accelerating and decelerating several times per revolution and thereby beginning to “toss the valves” (cause valve float) as much as 1,500 revs lower than they were designed to.