Engine Assembly Basics -- Cam, Valvetrain, Top-End Photo Gallery
Rocker clearance is an important consideration to be aware of. The rocker body needs to physically clear the spring and retainer throughout the range of travel. This is something that should not be taken for granted, especially with large springs and deeply dished or large diameter retainers. Springs such as COMP's Beehive design seen on this LS1 offer the greatest clearance.