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Manley NexTek Street/Strip .650 Lift Valve Springs Chevrolet LS-Series
$365.21
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Manley NexTek Street/Strip .650 Lift Valve Springs for Chevrolet LS-Series

If you're looking to boost your Chevy LS engine's performance, the Manley NexTek Street/Strip .650 Lift Valve Springs (Part Number: 221438-16) are an excellent choice. Designed specifically for the Chevrolet LS-Series, these springs are engineered to offer the perfect blend of reliability and performance, making them an ideal fit for both street and strip applications.

Key Features

  • Outer Diameter: 1.076/1.311"
  • Inner Diameter: .650/.885"
  • Installed Pressure: 150 @ 1.800"
  • Open Pressure: 375 @ 1.150"
  • Max Lift: .650"
  • Coil Bind: 1.100"
  • Spring Rate: 353 (lbs/in)

Exceptional Performance and Reliability

Manufactured from high-tensile strength chrome silicon steel alloy, these valve springs are built to last. Manley Performance utilizes their proprietary multi-step heat treating and shot peening processes to minimize load loss while maximizing fatigue life. This means you can count on these springs to perform consistently under pressure, whether you're on the track or cruising the streets.

Advanced Design for Optimal Functionality

Thanks to computer-aided modeling, Manley has crafted application-specific designs that cater to the unique demands of the Chevy LS engine. The use of ovate wire and conical designs not only reduces weight but also enhances the overall quality and reliability of the springs. Plus, the special polishing feature contributes to improved fatigue life, ensuring that these springs can handle the rigors of high-performance driving.

Fitment Information

The Manley NexTek .650 Lift Valve Springs are specifically designed for the Chevrolet LS-Series engines, making them a perfect fit for various models within this lineup. Whether you're building a street machine or a dedicated race car, these springs will support your engine's performance needs.

Customer Reviews

Customers have praised the Manley NexTek valve springs for their durability and performance. Many users report noticeable improvements in engine responsiveness and RPM stability, especially in high-performance applications. The feedback highlights the springs' reliability under demanding conditions, making them a trusted choice among automotive enthusiasts.

Upgrade Your Chevy LS Today

Ready to take your Chevrolet LS engine to the next level? The Manley NexTek Street/Strip .650 Lift Valve Springs (221438-16) provide the performance and reliability you need for both street and strip applications. Don’t settle for less; invest in quality components that can keep up with your high-performance goals!

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Vehicle
2004-2007, 2009-2013
Cadillac CTS-V
1998-2002, 2010-2013
Chevrolet Camaro
1997-2013
Chevrolet Corvette
2001-2004, 2006-2013
Chevrolet Corvette Z06
2009-2013
Chevrolet Corvette ZR1
1993-2002
Pontiac Firebird
2008-2009
Pontiac G8
2004-2006
Pontiac GTO

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How did Manley Performance Start?

Manley Performance, formerly called Manley Speed Equipment, was established in 1966 by Hank Manley shortly after his graduation from Brown University. His interest in the performance and racing traced back to 1960 when, at age 17, he rebuilt a 312 CID Ford V8 engine, installed a camshaft and three two-barrel carbs, and raced a ’56 Thunderbird on New Jersey’s streets. Initially, the company’s product lineup included stainless valves, lifters, camshafts, forged pistons, vanadium valve springs, pushrods, and timing chain kits. By 1998, Manley had outgrown its first Bloomfield, New Jersey facility and bought several acres in Lakewood, New Jersey. It was around this time that the brand’s name formally changed to Manley Performance. Nearly a decade later, the production space doubled in size.

Evolving in the Automotive Space

Led by GM Michael Tokarchik in 2002, Manley entered the high-performance passenger car market as an OEM supplier of connecting rods for the 2003/2004 Ford SVT Mustang Cobra. Production reached 2500 rods per week without missing a single delivery date. Ford awarded Manley its highest ever supplier rating. Manley’s presence in the OEM market continued from there as a supplier for the Ford GT. After nearly 50 years since its inception, Manley continues to be globally recognized as the leading manufacturer of performance valves, connecting rods, cylinder head components, pushrods, drive and oil systems, and several other engine parts.

What is Manley’s Specialty?

Manley Performance specializes in high-performance engine internals that range from stock replacements to full-on race applications. They have been the standard of the industry since their inception; a fact that still remains true now as they have ventured into new markets. Today, Manley Performance continues to re-define itself in a high-performance aftermarket industry that is constantly evolving. The brand has developed a wide range of new products for growing markets that include sport compact, Ford modular, and Chevy LS. Manley also maintains its leadership role with the traditional V8 engine business.

Get Manley Performance at Vivid Racing

If you are in need of a serious upgrade to your engine, then Manley Performance parts should be on your list. Like all of our suggested manufacturers, Manley uses the best materials available to ensure a quality part for your engine. We carry Manley connecting rods, crankshafts, pistons, and valve components. The large lineup of domestic parts includes sport compact vehicles, Ford modular engines, GM’s LS series internals, and HEMI product upgrades for Chrysler.

If you can’t find what you’re looking for or need help choosing the right part for your car, call our sales team at (480) 966-3040. We are here to make your buying experience a breeze.

Due to the intended usage of the products sold by Manley Performance Products, Inc., they are sold WITHOUT WARRANTY OR ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR THE INTENDED PURPOSE. Manley Performance Products, Inc. shall not, under any circumstances, be liable for any special, consequential or incidental damages, including but not limited to loss of profits or revenue, loss of other property or equipment, cost of purchased or replacement of goods, or claims by customers of the purchaser, which may arise and/or result from the sale, installation or use of these parts. Installation of parts intended for “off-highway” use could adversely affect the vehicle manufacturer’s warranty coverage. Subject to applicable state law. Some items may not be legal for use in California on pollution controlled vehicles. All weights specified are approximate and subject to manufacturing tolerances. Manley Performance Products, Inc. reserves the right to make changes in design, specifications, materials, or make product changes without incurring liability or obligation with respect to similar product previously manufactured. If technical advice is offered or given in connection with the use of any Products it will be as an accommodation to Buyer and without charge and Seller shall have no responsibilities or liabilities whatsoever for the content or use of such advice.

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