Description
Valve spring performance directly impacts your engine’s ability to maintain valve control at high RPM, especially in forced induction or heavily modified applications. The Isky 1.550in SP-Series springs deliver the spring rate and damping characteristics needed to prevent valve float while minimizing parasitic losses. With a complete set of 16 included, you’re ready for a full eight-cylinder engine swap or rebuild.
- Dual spring design with damper
- 460 lb/in spring rate
- 1.550 inch outer diameter
- 1.170 inch coil bind
- Set of 16 springs
- SP-Series specification
- High-RPM capable
- Isky manufacturing quality
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