Max Lift: 0.660″ – 7° Steel Retainer (+.050″) – I.D. Spring Locator (.505″) – 7° Machined Valve Lock – Viton Valve Stem Seals Manley Performance LS & LT NexTek® valve spring kits take the guess work out of making your valvetrain race-ready. Engineered for maximum durability, stability, and precision in high-performance and racing applications, these chrome-silicon alloy springs provide exceptional fatigue resistance and high-tensile strength, ensuring consistent valve control at extreme RPMs. Save time and money with these all-inclusive kits, featuring premium springs, retainers, I.D. locators, locks, and Viton® seals. Manley LS and LT Valve Spring Kits provide a complete, engineered solution, ensuring seamless compatibility for higher-lift camshafts and eliminating concerns with mismatched components. NexTek® Valve Springs are manufactured from “super clean” Hi-Tensile Chrome Silicon steel and shot-peened to MIL spec for maximum fatigue life. Spring No. 221436-16 7° Steel Retainer CNC machined to exacting tolerances and made of thru-hardened 4140 chromoly. Retainer No. 23621-16 (+.050″ Installed Height) I.D. Valve Spring Locator is CNC machined, heat treated, and black oxide finished. Locator No. 42334-16 (.505″ ID) 7° Machined Valve Locks use the highest quality steel alloy and are heat treated and black oxide finished. For 8mm (.3135″) valve stem. Lock No. 13098-16 Viton Valve Stem Seals offer exceptional resistance to heat, chemicals, and oils. Seal No. 24042-16 Note: Max. lift figures above may vary depending upon the cylinder head and installed height.
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