Outer Valve Springs With Damper-1.464 Dia.

The COMP Cams Outer Valve Springs With Damper—1.464 Dia. (part number 940-16) is a high-performance valve spring assembly designed for serious engine builders and performance enthusiasts. This set of 16 outer valve springs delivers a 241 lb/in spring rate with integrated damper technology, engineered to control valve float and harmonics across the RPM band while maintaining precise seating force.

Each spring features a 1.464-inch outer diameter and 1.200-inch coil bind specification, critical dimensions that determine compatibility with cylinder head spring seats and retainers. The 241 lb/in rate is selected for specific camshaft lift and duration combinations; it balances the need for rapid valve closure without inducing excessive loads on the valvetrain. The integrated damper design suppresses spring surge and vibration resonance—a key concern in high-RPM applications where secondary spring harmonics can reduce valve control and accelerate component wear.

This product is intended for street performance engines, naturally aspirated builds, and mild forced-induction applications where valve train stability and longevity are priorities. Builders working with aggressive cam profiles—particularly those exceeding 0.500-inch lift—rely on proper spring selection to ensure valves seat positively and avoid float or surge. The COMP Cams engineered specification ensures compatibility with OEM and aftermarket cylinder heads that accommodate the 1.464-inch OD footprint.

Outer valve springs are typically paired with inner springs in a dual-spring setup to distribute load and improve control across the valve lift curve. Proper spring rate selection is non-negotiable; underrating can cause float, while overrating increases parasitic losses and accelerates cam lobe and rocker wear. COMP Cams' 75+ years in valvetrain engineering backing this specification ensures measured performance rather than speculation.

Sold as a complete set of 16 springs—one per cylinder head opening—ready for installation in 8-cylinder, 16-valve applications or equivalent configurations requiring this outer spring specification.