Speedmaster Chevy GM LS1 1.7 Ratio Stainless Steel Roller Rocker Arm Set Stud Mount PCE261.1257

This is a Speedmaster roller rocker arm set designed specifically for Chevy GM LS1 engines, featuring a 1.7 rocker ratio and constructed from durable stainless steel. The stud mount design ensures secure, reliable fastening to your engine block, making it a direct bolt-on upgrade for performance and durability improvements.

Roller rocker arms reduce friction at the valve train and improve engine efficiency by using ball bearings at the pushrod contact point. This design enables increased valve lift and duration capability compared to stock stamped arms, making it ideal for high-performance builds, street applications, and engine modifications where improved valve train reliability is essential. The 1.7 ratio provides a mechanical advantage that optimizes valve opening and closing characteristics for LS1 platform engines.

Key Features & Benefits

• 1.7 Rocker Ratio: Optimized mechanical advantage for LS1 valve train performance and responsiveness.
• Stainless Steel Construction: Corrosion-resistant material provides durability and longevity in demanding engine environments.
• Roller Design: Ball bearing contact reduces friction and wear at the pushrod interface for improved reliability.
• Stud Mount Fastening: Direct bolt-on installation to Chevy GM LS1 engine block ensures secure, repeatable assembly.

Specifications

Ideal Applications

• High-performance LS1 engine builds and upgrades
• Street and strip racing applications
• Engine modifications requiring improved valve train reliability
• Aftermarket performance tuning and cam conversions