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Manley 221428-16 NexTek High-Performance Valve Spring 341 lb/in

(1985-1992, 1998-2002 Chevrolet Camaro; 1985-1992, 1997-2004 Chevrolet Corvette; 2004 Pontiac GTO; 1985-1992, 1998-2002 Pontiac Firebird)

Manufacturer

Picture for manufacturer Manley

Part Number

221428-16
6 reviews
Sale Price

$299.64

Estimated ship date Thursday, November 26

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Fitment guaranteed

Fitment guaranteed

Product Details

The Manley 221428-16 NexTek valve spring delivers high-performance reliability for demanding applications. Manufactured from super clean hi-tensile strength chrome silicon steel alloy, this spring is engineered for winning performance, long-term durability, and exceptional value in modern engine builds.

Specifications:

  • Outer Diameter: 1.076" top / 1.311" bottom
  • Inner Diameter: 0.650" top / 0.885" bottom
  • Installed Pressure: 150 lbs @ 1.800"
  • Open Pressure: 355 lbs @ 1.200"
  • Spring Rate: 341 lbs/in
  • Coil Bind: 1.085"
  • Maximum Valve Lift: 0.600"

Advanced Engineering:

Manley's proprietary multi-step heat-treating process combined with precision shot peening minimizes load loss and provides superior fatigue life. Computer-aided modeling ensures application-specific designs optimized for each platform. Many NexTek springs utilize ovate wire and conical designs to achieve the lightest weight while maintaining the highest quality and reliability. Special polishing features further enhance fatigue life for extended service intervals.

Ideal for Chevy LS, Ford Modular, and Chrysler HEMI applications where performance and reliability are critical. Each spring is precision manufactured to deliver consistent performance under extreme conditions.

Products specifications

Fits

1985-1992, 1998-2002 Chevrolet Camaro; 1985-1992, 1997-2004 Chevrolet Corvette; 2004 Pontiac GTO; 1985-1992, 1998-2002 Pontiac Firebird

Coated

No

Coil Bind Height (in)

1.085 in.

Damper Spring Included

No

Inside Diameter of Inner Spring (in)

0.885 in.

Number of Springs Per Valve

Single

Outside Diameter of Outer Spring (in)

1.311 in.

Quantity

Sold as a set of 16.

Spring Rate (lbs/in)

341 lbs./in.

Valve Spring Style

Conical ovate wire

i have to get shipping free as i placed original order on fathers day

Can't comment until I have the product.

fast and easy would buy from this seller again

Am happy with price, lower than anywhere else. Product is perfect and shipping was fast. Had to call because website was down while price increases were uploaded, cost an extra $20 but still worth the savings. Would definitely buy from again.

I was looking for KC lights for my jeep, not only CI they have just the ones I was looking for, they were half the price of any local auto shop! Shipping costs were very low to. Thanks!

Excellent e-merchant. Awesome service, great products and super low prices !!!

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