Dual Valve Springs 1.489 Dia. (.819 ID.)

The COMP CAMS Dual Valve Springs 1.489 Dia. (.819 ID.) are precision-engineered dual spring assemblies designed for high-performance engine builds and street/strip applications. A set of 16, these valve springs deliver the consistent load rate and reliability required when upgrading to aggressive cam profiles, solid lifters, or increasing engine RPM capability. Whether you're building a naturally aspirated stroker, modifying a classic muscle car, or preparing a dedicated performance engine, dual valve springs are essential for controlling valve float and maintaining proper seating force across the entire RPM band.

Each spring in this set features a 1.489-inch outer diameter with a .819-inch inner diameter, providing precise fitment in most small-block and mid-sized engine applications. With a 367 lb/in spring rate, the dual spring design offers exceptional control—the inner spring handles low-lift operation while the outer spring engages under high-lift conditions, preventing coil bind at 1.100 inches and reducing seat pressure to extend component life. COMP CAMS' dual spring geometry minimizes harmonics and valve float, critical factors in maintaining fuel economy and drivability on the street while unlocking RPM potential for track use. The staggered spring design also reduces spring surge, allowing stable valve operation even with radical cam timing.

Enthusiasts upgrading cylinder heads, installing performance camshafts, or increasing valve lift will benefit from this set's robust design and forgiving characteristics. Installation requires careful spring height measurement and seat pressure verification to match your specific cam and lifter combination—incorrect spring rate can result in valve float, bent pushrods, or premature component wear. These springs are compatible with engines using 1.489-inch diameter spring pockets and standard valve stem diameters; always verify your engine's spring pocket dimensions and coil bind clearance before purchase. For serious builders, dual springs represent the best balance between reliability, performance, and cost-effectiveness in the pursuit of higher horsepower and sustained engine durability.