Overview 

The PP rocker arm set for GM LS3, LS7, L99, L92, and LS9 engines is designed to enhance valve train stability and performance under high-RPM and high-load conditions. These rocker arms typically feature a 1.7:1 or 1.72:1 ratio, offering improved valve lift and responsiveness compared to stock units. Constructed from high-strength materials such as CNC-machined aluminum or chromoly steel, they provide excellent durability and reduced deflection. Many sets include upgraded trunnion bearings or roller tips to minimize friction, increase efficiency, and extend component life. They are direct bolt-on replacements compatible with factory pedestals, making them ideal for performance upgrades or rebuilds on LS-based engines.

Features

• Designed for GM LS3, LS7, L99, L92, and LS9 engines for enhanced valve train stability

• Typically feature a 1.7:1 or 1.72:1 ratio for increased valve lift and improved engine responsiveness

• Constructed from high-strength materials such as CNC-machined aluminum or chromoly steel for superior durability

• Often include upgraded trunnion bearings or roller tips to reduce friction and wear

• Provide improved efficiency and longevity under high-RPM or high-load conditions

• Direct bolt-on replacements compatible with factory pedestals, ideal for performance builds or engine rebuilds