Description
High-RPM stability and consistent valve control are non-negotiable in LS-series racing applications, and factory valve springs simply won’t cut it when you’re pushing power levels beyond stock parameters. The Manley Chevy LS Spring Kit delivers the spring rate and structural integrity needed to prevent valve float, ensure accurate valve timing, and maintain reliability during sustained high-boost or naturally aspirated operation. This is a direct bolt-on upgrade that pairs proven Manley engineering with OEM-compatible geometry—no custom fabrication required.
- Dual spring design
- 379 lb/in spring rate
- 1.295 in outer diameter
- 1.100 in coil bind
- Steel retainers included
- GM LS-series fitment
- Bolt-on installation
- Kit includes all springs
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