When using our corrected geometry rocker arms the valve
stem end will form a right angle (90 degree) to the centerline of the rocker
shaft at half lift. At the same time the center of the pushrod ball,
at half lift, will also form a right angle to the center of the rocker
shaft. This gives equal arc motions above and below the center of the
rocker arm shaft for both the pushrod ball travel and the valve stem travel.
Using corrected geometries provides control and
stability of the valve train at high RPMs. Resulting in a more
constant power curve as the RPM limits are raised.
Question: When do we recommend applying
corrected geometry to your rocker arms?
Ans: A noticeable improvement in control and reliability
will be found when corrected geometry rocker arms are used on cams with
.625" lift and up. The greater the lift of the cam the more important it will
become to use corrected geometry rocker arms.