GM LS Series Dual Valve Spring Kit

The COMP CAMS GM LS Series Dual Valve Spring Kit is a high-performance dual spring assembly engineered for General Motors LS-series engine builders and performance enthusiasts. This complete kit delivers the spring rate and seating characteristics required for reliable operation across a wide RPM range, whether you're building a street engine, race motor, or high-flow cylinder head setup. The 505 lb/in spring rate provides consistent valve control while the dual-spring design distributes load and reduces harmonics that can cause premature spring failure in demanding applications.

Each spring assembly features a 1.320-inch outer diameter with a 1.100-inch coil bind specification—geometry that accommodates standard LS cylinder head valve seats and retainers while maintaining proper clearance under full load. The steel seat and steel retainer construction ensures durability under sustained high-lift cam profiles and aggressive valve events. Viton seals provide chemical resistance and thermal stability, preventing degradation in the high-temperature environment of the combustion chamber. Built to OEM tolerances, this kit simplifies installation on LS1, LS2, LS3, LS6, LS7, and other LS platform applications without requiring custom machine work or modifications.

Buyers preparing LS engines for increased boost, supercharger conversion, high-RPM naturally aspirated builds, or standalone ECU tuning rely on proper valve spring selection to prevent float, coil bind, and catastrophic valve train failure. This COMP CAMS kit removes guesswork by delivering factory-validated spring rates and materials in a ready-to-install package. The dual-spring design absorbs energy that single springs cannot handle, extending service life across season-long track duty, drag racing, road course competition, and street performance use. Builders upgrading camshaft profiles, cylinder head ports, or valve lift specifications should verify spring compatibility with their specific cam specification and valvetrain geometry.