The Melling Valve Spring Kit LS Dual, rated at 151 lbs of seat pressure at an installed height of 1.800 inches, is engineered for high-performance GM LS engines requiring advanced valvetrain control. With an open pressure of 417 lbs at 1.150 inches and a coil bind height of 1.080 inches, this dual-spring setup is ideal for aggressive camshaft profiles and high-RPM applications. The springs support a maximum valve lift of up to 0.650 inches and feature a spring rate of 409 lbs per inch, delivering excellent performance under demanding conditions. Constructed from high-strength chrome-silicone, the springs offer superior heat resistance and long-lasting durability. The kit includes 16 dual valve springs, along with steel retainers, locks, and hat-type valve stem seals, making it a complete solution for upgrading your valvetrain in street/strip or high-horsepower builds.

Features

Complete set for comprehensive valve train upgrade

Includes 16 durable 466594 valve springs

Steel valve spring retainers for enhanced performance

Designed for street to racing applications

Compatible with a range of popular vehicle models

Ideal for high-performance and OEM upgrades

Specifications

Inside Diameter: 0.670 inches

Installed Height: 1.800 inches

Installed Pressure: 151.0 psi

Open Pressure: 417.0 psi

Outside Diameter: 1.304 inches

Spring Open Height: 1.150 inches

Spring Type: Single Spring

Dimensions: 8x6x5.3 inches