Tall LS Valve Cover Bolt Assembly Mounting Hardware for Tall LS Valve Covers HolleyThese hardware assemblies were developed specifically for Holley Tall Ls valve covers and are available as a single service component or a full set of 8. Each assembly features a polished Holley Tall Ls valve cover bolt (M6 x 1. 0 threads), an aluminum spacer, and an Oe style Ls valve cover grommet. Features and Benefits: Replacement for Holley Tall Ls Valve Cover extended length hardware assemblies only Torque mounting bolts to 106 inch lb (9 feet