or float? something bout the valvetrain

Definition: A high-rpm engine condition in which the valve lifters lose contact with the cam lobes because the valve springs are not strong enough to overcome the momentum of the various valve train components. The onset of valve float prevents higher-rpm operation. Extended periods of valve float will damage the valve train.

thank you

It should also be known that excessive seat pressure can cause damage as well as waste power. You only need springs that are strong enough to keep the valve closed appropriately within the RPM range the motor will see.