What is the maximum lift this valve spring kit can handle?

This Manley valve spring kit is designed for a maximum lift of 0.660 inches. However, the actual maximum lift can vary depending on your cylinder head configuration and the installed height of the components.

What specific components are included in this kit?

This is a complete kit that includes NexTek? valve springs, titanium retainers, I.D. spring locators, machined valve locks for 8mm valve stems, and Viton? valve stem seals.

What makes the NexTek? valve springs special?

The NexTek? springs are manufactured from a 'super clean' Hi-Tensile Chrome Silicon steel and are shot-peened to military specifications. This process significantly improves their fatigue resistance and durability, ensuring consistent performance at high RPMs.

Manley GM LS Series .660in Max Lift Valve Spring and Retainer Kit

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Specifications

Brand: Manley Performance
Part #: 26362334KS
UPC: 807298102337

Manley GM LS Series .660in Max Lift Valve Spring and Retainer Kit

Name: Manley GM LS Series .660in Max Lift Valve Spring and Retainer Kit
Brand: Manley Performance
Price: 540.29 USD
Availability: InStock

$540.29

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Manley GM LS Series .660in Max Lift Valve Spring and Retainer Kit. A complete kit for higher-lift camshafts.

Key Features

Verified fitment for GM LS and LT series engines.
NexTek? valve springs are made from chrome-silicon alloy and shot-peened for maximum fatigue life.
Titanium retainers are CAD-designed to reduce mass while maintaining strength.
Includes I.D. spring locators, machined valve locks, and Viton? valve stem seals.
Designed for use with higher-lift camshafts up to 0.660 inches maximum lift.
Machined valve locks are made from a high-quality steel alloy and heat-treated.

This kit is designed for GM LS and LT series engines. Please consult the manufacturer's specifications for exact compatibility with your specific cylinder head and installed height.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

The NexTek? valve springs in this Manley kit are made from a chrome-silicon alloy that's shot-peened to military specifications. This process helps the springs resist fatigue, which is crucial for maintaining consistent valve control when your engine is spinning at high RPMs. If you're building a performance LS or LT engine and want to use a camshaft with a higher lift, this kit takes the guesswork out of matching components.

You get everything you need in one box: the NexTek? springs, titanium retainers designed to reduce mass, I.D. spring locators, machined valve locks for 8mm valve stems, and Viton? valve stem seals that hold up well to heat and oil. This all-inclusive approach ensures all the parts work together seamlessly, especially when you're pushing the limits with a more aggressive camshaft profile. The titanium retainers are CAD-designed to be as light as possible without sacrificing strength, which helps reduce valvetrain stress.

This kit is designed for a maximum lift of 0.660 inches, but keep in mind that the actual maximum lift can vary depending on your specific cylinder head setup and installed height. It's a well-built solution for anyone serious about building a reliable, high-performance LS or LT engine.