1.280 Steel C/M Valve Spring Retainers - 7 Deg

The PAC Racing Springs 1.280 Steel Chromoly Valve Spring Retainers with 7-degree angle (PAC-R355-16) are precision-engineered components designed specifically for GM LS-series engine builds requiring dual-spring configurations. This set of 16 retainers delivers the dimensional accuracy and material quality that LS platform builders demand when assembling high-performance or race-ready engines where valve control and reliability are non-negotiable.

Each retainer features a 1.280-inch diameter for dual-spring applications with 0.920-inch and 0.650-inch outer diameter step geometry, matching the spec requirements for LS-series cylinder head port configurations. The 300-series material composition and chromoly construction provide the strength necessary to handle aggressive valve spring pressures while maintaining dimensional stability across thermal cycles common in performance and racing environments. The 7-degree angle geometry is critical for proper valve stem alignment and seat pressure distribution, ensuring even load transfer across the valve face and consistent engine performance.

This component is essential for LS engine enthusiasts and builders working on street performance, track applications, or competition builds where factory retainers don't meet upgraded valve spring requirements. The set of 16 covers a complete LS cylinder head (8 intake + 8 exhaust valves). PAC Racing Springs specializes in valve train components for high-horsepower applications, and these retainers are engineered to support the reliability demands of modified LS platforms where precision engineering directly impacts engine longevity and power delivery consistency.