What is the purpose of double valve springs?

Double valve springs, like these Manley NexTek units, use an inner and outer spring working together. This design offers improved stability and helps to dampen harmonics, which can prevent valve float at higher engine speeds and under aggressive camshaft profiles.

Are these springs suitable for stock LS engines?

These are high-performance valve springs designed for modified LS engines that may use more aggressive camshafts or see higher RPMs. While they can be used in some stock applications, they are primarily intended for builds where increased valvetrain stability is needed.

What does 'NexTek' wire technology mean?

NexTek wire is a proprietary material used by Manley Performance for their valve springs. It's known for its high tensile strength and fatigue resistance, contributing to the springs' durability and ability to maintain their performance characteristics over a long service life.

Specifications

Brand: Manley Performance
Part #: 221422-16
UPC: 807298082134

Manley Small Block Chevy LS Series 1.335 Double NexTek High Perf Valve Springs

Name: Manley Small Block Chevy LS Series 1.335 Double NexTek High Perf Valve Springs
Brand: Manley Performance
SKU: manley-performance-manley-small-block-chevy-ls-series-1-335-double-nextek-high-p-t14-299522
Price: 734.43 USD
Availability: BackOrder

$734.43

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley Performance LS Series 1.335 Double NexTek valve springs for Small Block Chevy LS engines. High performance valve springs.

Key Features

Fits Small Block Chevy LS Series engines.
Set of 16 double valve springs.
1.335 inch outer diameter.
Features Manley's NexTek wire technology for durability and consistent performance.
Dual spring design provides stability and helps prevent valve float at high RPM.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

Manley Performance LS Series 1.335 Double NexTek valve springs are a high-performance option for your Small Block Chevy LS engine. These springs are designed to handle the demands of modified engines, ensuring your valvetrain stays in sync under high RPM and increased lift conditions. When you're building or upgrading an LS engine for serious performance, the valve springs are a critical component that needs to be up to the task.

These Double NexTek springs feature a unique dual-spring design, with an inner and outer spring working together. This setup offers excellent stability and dampening characteristics, which helps prevent valve float at higher engine speeds. The 1.335-inch outer diameter is a common size for many LS applications, and the NexTek wire technology Manley uses is known for its durability and consistent performance over time. This means you can rely on them to maintain their spring rate and keep your valves closing properly, even after many miles and hard use.

This set includes 16 springs, enough for a complete V8 engine. Proper installation is key to getting the most out of these springs, so be sure to consult your engine build guide or a trusted mechanic for the correct procedure. They are a well-built component that can make a notable difference in the reliability and performance of a high-output LS engine.