Issue with Stamped Steel Rockers in BB Chevy

[Dwight Southerland]

Originally Posted by Chris Hill

The beehive does help with decreased mass, but it also helps the valvespring harmonics issue. A beehive spring does not have constant stiffness and thus not a constant natural frequency. If a system does not have a constant natural frequency, harmonics are not as much of an issue.

. . . take your peak valvetrain kinematic acceleration (generally during opening at approximately ¼ to 1/3 lift) and look at the stress on the rocker arm. You will find a pretty large safety factor for stress in the rockerarm. The only way to break it is impact stress.

Scientific evidence is on your side in both issues. Smart camshaft designers work with this information constantly in the forefront of their design.