1.235 Steel C/M Valve Spring Retainers - 7 Deg

The 1.235 Steel C/M Valve Spring Retainers - 7 Deg from PAC Racing Springs are engineered for serious LS-series engine builders and performance enthusiasts who demand precision valve train control. These chromoly retainers are critical components that maintain spring pressure consistency and prevent valve float at high RPM, making them essential for forced induction, nitrous, and naturally aspirated performance applications. Whether you're building a street engine or a competition powerplant, these retainers ensure reliable valve actuation under extreme loads.

Manufactured from 300 series chromoly steel, the 1.235 inch outer diameter design accommodates dual spring configurations with 0.880 inch and 0.640 inch OD step geometry, offering flexibility across different valve spring combinations. The 7-degree seat angle optimizes seating geometry for reliable spring preload retention and reduces rotational stress on retainer and keeper interfaces. The chromoly construction provides superior strength-to-weight characteristics compared to standard steel, critical for reducing inertial losses and improving throttle response in high-revving LS engines.

This set of 16 retainers is purpose-built for GM LS-series engines, including LS1, LS2, LS3, and LS7 variants, making them ideal for both OEM and aftermarket cylinder heads. Installation requires precise seating to ensure uniform spring pressure across all valves—critical for eliminating valve train harmonics and maximizing engine longevity. These retainers pair seamlessly with PAC Racing Springs' complete valve spring packages and are trusted by engine builders and professional racing teams for their consistent dimensional tolerance and durability under sustained high-RPM operation.