Valve Springs - Dual

The CROWER Valve Springs – Dual Spring (Part No. 68324-8) is a precision dual-spring assembly engineered for high-performance engine applications requiring precise valve control and reliable seat pressure. This set of 8 dual valve springs delivers a 258 lb/in spring rate with a 0.910 in coil bind specification and 1.385 in outside diameter, designed to meet exacting OEM and racing specifications where consistent valve timing and lift control are critical to engine performance and longevity.

The dual-spring design provides superior control over valve opening and closing events compared to single-spring systems, reducing harmonic instability and extending valve life under sustained high-RPM operation. The 258 lb/in spring rate is calibrated to maintain consistent seat pressure across the full range of engine loads, preventing valve float while minimizing unnecessary stress on valve stems and rocker arms. The 0.910 in coil bind dimension ensures proper clearance margins in your engine's valve spring pockets, while the 1.385 in OD accommodates standard valve spring seats. CROWER springs are manufactured to tight tolerances and tested for consistency across the entire set of 8 springs, critical for balanced and reliable multi-cylinder performance.

These valve springs are specified for engine builds where factory spring rates are insufficient for performance cam profiles, turbocharged or supercharged applications, or where increased valve control is required without stepping up to extreme performance levels. Users restoring or upgrading small-block and mid-range displacement engines, as well as experienced enthusiasts performing valve train upgrades, rely on CROWER springs for predictable performance and proven durability. Proper installation requires confirming compatibility with your specific engine's valve spring pocket geometry and retainer design before purchase.

Dual valve springs are standard in modern high-output engine designs and are essential for any serious performance or competition build. The combination of CROWER's engineering reputation and the precise specifications of this 258 lb/in dual-spring assembly makes it a dependable choice for builders who need consistent, measured performance gains without overspecifying their valve train components.