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Manley NexTek Street/Strip .660 Lift Valve Springs for Chevrolet LS-Series
If you're looking to boost your Chevy LS engine's performance, the Manley NexTek Street/Strip .660 Lift Valve Springs (part number 221436-16) are a fantastic choice. Designed specifically for the Chevrolet LS-Series, these valve springs are engineered to deliver exceptional performance and reliability on the street or the strip.
Key Features
- Material: Crafted from "super clean" Hi-tensile strength chrome silicon steel alloy, ensuring durability and long-lasting performance.
- Heat Treatment: Manley's proprietary multi-step heat-treating process minimizes load loss and enhances fatigue life.
- Ovate Wire Design: Utilizing ovate wire and conical designs, these springs are among the lightest and most reliable available.
- Polishing Feature: A special polishing process further improves the fatigue life of each spring.
Specifications
- Outer Diameter: 1.295"
- Inner Diameter: .676"
- Installed Pressure: 155 lbs @ 1.810"
- Open Pressure: 405 lbs @ 1.150"
- Max Lift: .660"
- Coil Bind: 1.100"
- Spring Rate: 379 lbs/in
Fitment Information
The Manley NexTek 221436-16 valve springs are specifically designed for use in Chevrolet LS engines, making them an ideal upgrade for enthusiasts looking to enhance their engine's capabilities. Whether you're building a performance street machine or a dedicated race car, these springs will help you achieve optimal valve control at high RPMs.
Customer Reviews
Customers have praised the Manley NexTek valve springs for their reliability and performance. Many have noted the noticeable improvements in their engine's responsiveness and power delivery. Here are a few highlights from trusted reviews:
- "These springs are a game changer for my LS build. I noticed a significant increase in power!"
- "Installation was straightforward, and the quality is top-notch. Highly recommend!"
- "Great value for the performance you get. They hold up under pressure."
Upgrade your Chevrolet LS engine with the Manley NexTek Street/Strip .660 Lift Valve Springs and experience the difference in performance and reliability!
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Make Vehicle | Model | Year |
---|---|---|
2004-2007, 2009-2013 Cadillac CTS-V |
CTS-V | 2004-2007, 2009-2013 |
1998-2002, 2010-2013 Chevrolet Camaro |
Camaro | 1998-2002, 2010-2013 |
1997-2013 Chevrolet Corvette |
Corvette | 1997-2013 |
2001-2004, 2006-2013 Chevrolet Corvette Z06 |
Corvette Z06 | 2001-2004, 2006-2013 |
2009-2013 Chevrolet Corvette ZR1 |
Corvette ZR1 | 2009-2013 |
1993-2002 Pontiac Firebird |
Firebird | 1993-2002 |
2008-2009 Pontiac G8 |
G8 | 2008-2009 |
2004-2006 Pontiac GTO |
GTO | 2004-2006 |
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 SpaceLed 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 RacingIf 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.
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