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Manley 221436-1 NexTek Double Valve Spring 1.295" OD LS-Series

Manufacturer

Picture for manufacturer Manley

Part Number

221436-1
5 reviews
Sale Price

$18.21

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Manley 221436-1 is a high-performance double valve spring engineered for Chevrolet LS-Series engines. Part of Manley's advanced NexTek product line, this dual spring is designed to deliver maximum reliability and performance for high-performance hydraulic roller applications with up to 0.660" maximum valve lift.

Key Specifications:

  • Outside Diameter: 1.295 inches
  • Inside Diameter: 0.676 inches
  • Spring Rate: 379 lbs/in
  • Installed Height/Pressure: 155 lbs @ 1.810 inches
  • Open Height/Pressure: 405 lbs @ 1.150 inches
  • Coil Bind Height: 1.100 inches
  • Maximum Valve Lift: 0.660 inches

Advanced NexTek Technology:

  • Manufactured from super-clean, high-tensile chrome silicon steel alloy for superior strength and durability
  • Shot-peened to MIL specifications for maximum fatigue life
  • Proprietary multi-step heat-treating process minimizes load loss over time
  • Computer-aided modeling reduces valve bounce and valve gear separation
  • Extended tip thickness design eliminates overload breakage
  • Tightly controlled open-end flatness reduces valve stem side loading

This double coil spring provides the precise valve control needed for modified LS engines while maintaining excellent durability. Compatible with Manley retainer part number 23616TS-16 (10° design). Sold individually.

Products specifications

Coated

No

Coil Bind Height (in)

1.100 in.

Damper Spring Included

No

Inside Diameter of Inner Spring (in)

0.676 in.

Number of Springs Per Valve

Dual

Outside Diameter of Outer Spring (in)

1.295 in.

Quantity

Sold individually.

Spring Rate (lbs/in)

379 lbs./in.

Valve Spring Style

Standard

Very Easy

Super fast shipping, Lowest price I could find anywhere. A+++++++++++++++

Lowest price for my engine bolt set, beat Jeg's and Summit by quite a bit! I will definitely be checking Autoplicity for future needs.

Excellent shop with good prices, rapid delivery, good support, thank you!!!<br>This shop I would recommend for the purchases of auto of repair parts.<br><br>YULIYA.

I build engines for Classic muscle cars and hot rods. Presently assembling chev. SB 383 cu/in. Went shopping for a Name Brand rotating assembly that was complete and ready to install.Shopped several other sites before finding "Autoplicity" Prices were GREAT (best I could find Anywhere), Shipping Very prompt, Shpg. charges Very reeasonable,I will Defenitely use them again!!!

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