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Manley 221435-1
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Manley Polished NexTek H.P. Valve Spring GM LS-series

660-221435-1

made in usa
Ships directly from the manufacturer
Save $10 off $199, $45 off $499, $100 off $999. Promo Code: FALLFUN exclusions apply

$31.99
Manley Polished NexTek H.P. Valve Spring GM LS-series $31.99
Out of stock
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NexTek H.P. Valve Spring
  • GM LS-series
  • 1.340'' O.D.
  • 0.726'' I.D.
  • 394 lbs./in. Spring Rate
  • 170 @ 1.810'' Installed
  • 450 @ 1.110'' Open
  • 0.700'' Max Valve Lift
  • 1.050'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • Manley 221435-1 Details

    GM LS-Series

    GM LS-series high performance hydraulic roller applications

  • Type of Spring: Polished Double Coil without Damper
  • Color Code: N/A
  • Installed Height and Pressure: 1.810'' @ 170 lbs./in.
  • Open Height and Pressure: 1.110'' @ 450 lbs./in.
  • Spring Rate: 394 lbs./in.
  • O.D. of Outer Spring: 1.340''
  • I.D. of Outer Spring: 0.994''
  • I.D. of Middle Spring: N/A
  • I.D. of Inner Spring: 0.726''
  • Coil Bind height: 1.050''
  • Weight: 94 grams
  • Damper Included: No

    Click Here to see 660-221435 Valve Spring Load Chart

  • Specifications:

    Open Height (in)
    1.150 in.
    Installed Height (in)
    1.810 in.
    Open Pressure (lbs)
    450 lbs.
    Outside Diameter of Outer Spring (in)
    1.340 in.
    Coil Bind Height (in)
    1.050 in.
    Seat Pressure at Installed Height (lbs)
    170 lbs.
    Spring Rate (lbs/in)
    394 lbs./in.
    Quantity
    Sold individually
    Damper Spring Included
    No
    Number of Springs Per Valve
    Dual
    Manufacturer's Part Number:
    221435-1
    Shipping Weight:
    0.2
    Package Height:
    3
    Package Depth:
    1.5
    Package Width:
    1.6

    Better By Design

    Manley NexTek (Next Generation) Valve Springs were developed over a decade ago and still offer unequaled performance. These durable springs are able to satisfy the demands of top-level engine builders who need the absolute highest-quality valve springs available. Manley Nextek springs can be found in drag race applications ranging from Bracket racers to Top Fuel, oval track engines across the country, and muscle cars on the street and strip.

    Features:

    • Manufactured from HiTensile Chrome Silicon steel
    • Shotpeened to MIL Specs for maximum fatigue life
    • Proprietary multi-step heat treating minimizes load loss
    • Tightly controlled open end flatness reduces valve stem side loading
    • Tip thickness designed to eliminate overload breakage
    • Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities
    • Available in Polished and Super Finished versions to reduce friction, improve fatigue life and minimize load loss
    • Super Finished is a multi-step surface enhancement that significantly improves fatigue strength

      Click Here to see Valve Springs Load Chart

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