A linkless variable valve mechanism includes a rocker arm having a first end and a second end. A rocker roller is carried by the first end of the rocker arm, and engages an input cam lobe disposed upon an input shaft. A frame member having a first end and a second end is pivotally mounted upon the input shaft. The first end of the frame member is pivotally coupled to a control shaft, and the second end is pivotally coupled to the second end of the rocker arm. An output cam is pivotally mounted upon the input shaft. An output cam follower is attached to the output cam, and includes an inside surface. A sliding block is pivotally coupled to the second end of the rocker arm and engages the inside surface of the cam follower.