Max Lift: 0.650" - 7° Titanium Retainer (+.095) - I.D. Spring Locators - 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. 221438-16
  • 7 Titanium Retainer CAD designed for ultimate reduction in mass without sacrificing strength. Retainer No. 23601-16 (+.095" Installed Height)
  • I.D. Valve Spring Locators are CNC machined, heat treated, and black oxide finished. Locator No. 42148-8 (Int.) / 42161-8 (Exh.)
  • 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.

Information:

Manley LT4 Valve Spring Kit, KIT-SPRING/RETAINER/LOCATOR/LOCK/SEAL
Attributes
California Proposition 65 WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Category Hierarchy Valve Springs & Kits, Valve Springs & Kits>LS & LT Valve Spring Kits, Valve Springs & Kits>LS & LT Valve Spring Kits
Country of Origin (Primary) US
Emission Code Off Road
Engine LT4, LT4
Engine - Web LT4
Engine Detail - Web LT4
Engine Family LT4
Engine Type ICE, ICE
Finish Super Finished, Super Finished
Hazardous Material Code N
Industry Automotive, Automotive
Installed Pressure and Height 150 @ 1.800, 150 @ 1.800
Life Cycle Status Code Available to Order
Make Chevrolet, Chevrolet
Make - Web Chevrolet
Open Pressure and Height 380 @ 1.150, 380 @ 1.150
Out of Stock Message Call for Availability, Call for Availability
Product Market Domestic, Domestic
Product Type Valve Spring Kit, Valve Spring Kit
SDR Required Flag N
Title - Web Manley Valve Spring Kit, KIT-SPRING/RETAINER/LOCATOR/LOCK/SEAL, Manley Valve Spring Kit - Chevrolet LT4 - NexTek? Springs/Steel Retainers/I.D. Locators/Machined Valve Locks/Viton Seals
Valve Lift - Maximum .650, .650
Valve Lock Angle 7, 7
Valve Spring Coil Bind Height 1.100, 1.100
Valve Spring Inner Diameter - Bottom .885, .885
Valve Spring Inner Diameter - Top .650, .650
Valve Spring Outer Diameter - Bottom 1.311, 1.311
Valve Spring Outer Diameter - Top 1.076, 1.076
Valve Spring Quantity 16, 16
Valve Spring Rate 353, 353
Valve Spring Series NexTek?, NexTek?
Valve Spring Type Single Conical Ovate Wire, Single Conical Ovate Wire
Warranty Time 30
Weight 73, 73
GTIN 00807298111797