MANLEY 221422-1 Nextek Valve Spring Gm Ls H.p. 1.335 O.d. 0.622 I.d. 780

( Brand: Manley ), ( Manufacturer Part Number: 221422-1 ), ( Part Type: Valve Spring )

Review MANLEY Nextek.p. Valve Spring Gm Ls series 1.335.d. 0.622.d. 780 fits 335

Introducing the Manley Engineering Nextek HP Valve Spring for the GM LS-series engines, specifically designed for applications with increased horsepower. This high-performance valve spring is engineered to provide superior reliability and durability under high-stress conditions.

The Manley Nextek HP Valve Spring boasts an outside diameter of 1.335 inches and an inside diameter of 0.622 inches, making it a perfect fit for the GM LS-series engines. Its unique design includes a dual-spring configuration, which provides better control over valve motion, reducing valve float and ensuring optimal engine performance.

Manufactured using high-quality materials, this valve spring is constructed from chrome silicon alloy. The material's superior strength and durability ensure that it can withstand the increased pressures and temperatures generated by high-horsepower engines.

Additionally, the Manley Nextek HP Valve Spring features a precision-ground, closed-end, and open-end design, providing a more consistent valve seal and reducing the risk of valve noise. The spring's heavy-duty, dual-coil design also ensures that it can maintain its sealing force under extreme conditions, helping to prevent valve bounce and ensuring consistent engine performance.

In summary, the Manley Engineering Nextek HP Valve Spring is a high-performance, reliable, and durable solution for GM LS-series engines that require increased horsepower. Its dual-spring design, precision-ground construction, and high-quality materials make it an excellent choice for enthusiasts and performance builders looking for superior engine performance and reliability.

The Manley Nextek HP Valve Springs (Part Number: 221422-1) are designed for use in General Motors LS-series engines with a 1.335 inches outside diameter (OD) and a 0.622 inches inside diameter (ID). These springs are known for their high performance capabilities and are popular among engine builders and enthusiasts. Here are some pros and cons to consider before making a purchase:

1. High Performance: Manley Nextek HP Valve Springs are designed to provide increased power output and improved engine response. They are known for their ability to handle high RPMs and increased cylinder pressure.

2. Durability: Manley springs are made from high-quality materials, including chrome silicon alloy wire, which provides excellent fatigue resistance and durability.

3. Consistent Performance: Manley Nextek HP Valve Springs are heat-treated to ensure consistent performance throughout their service life.

4. Improved Engine Sound: These springs can help improve the sound of your engine by allowing for greater valve control and faster opening and closing.

1. Cost: Manley Nextek HP Valve Springs are more expensive than OEM springs, which can be a deterrent for some buyers.

2. Installation: Installing aftermarket valve springs can be a complex and time-consuming process, requiring specialized tools and expertise.

3. Potential for Noise: Some users have reported that these springs can be noisier than OEM springs, which may be a concern for some.

The Manley Nextek HP Valve Springs (Part Number: 221422-1) offer several advantages for performance-minded engine builders and enthusiasts. They provide increased power output, improved engine response, and durability. However, they come with a higher cost and a more complex installation process compared to OEM springs. Additionally, some users have reported that these springs can be noisier than OEM springs.

If you are looking to maximize the performance of your LS-series engine and are willing to invest in high-quality aftermarket parts, the Manley Nextek HP Valve Springs (Part Number: 221422-1) are an excellent choice. However, if you are on a tight budget or prefer a quieter engine, you may want to consider sticking with OEM springs or exploring other aftermarket options with a lower price point.

Details:

Of Outer Spring: 0.907''I.D. Of Middle Spring: N/AI.D. GM LS-series high performance solid roller applications. Valve Spring GM LS-series 1.335.D.

Spring Rate270 1.800'' Installed870 1.020'' Open0.780'' Max Valve Lift0.960'' Coil Bind Double No Damper 1/pkg. American Express. Of Outer Spring: 1.335''I.D.

specifications voomvalve:

• for models: 335
• brand: Manley
• mpn: 221422-1
• part type: Valve Spring

seller voomvalve:

• rating: 99.0%
• # reviews: 611823
• city: , Ohio

offer voomvalve:

• started: January 7, 2026
• sold: 0
• availability: In Stock
• quantity: 10
• options: Ship-to-home

shipping voomvalve:

• type: Fixed
• transit: 3-8 Days
• class: Standard
• service: Standard
• cost: $15.99

general voomvalve:

• condition: New
• Engines Engine Parts > Valvetrain Components > Valves

returns voomvalve:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

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