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Manley 221442-16 Valve Spring Set, Set of 16
Manley 221442-16 Valve Spring Set, Set of 16

Manley 221442-16 Valve Spring Set, Set of 16

Chevy Small Block V8, Dual Spring Valve Spring Style, 1.560" Outside Diameter

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Manley 221442-16 Valve Spring Set, Set of 16
Manley 221442-16 Valve Spring Set, Set of 16
Manley 221442-16 Valve Spring Set, Set of 16
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Manley 221442-16 Valve Spring Set, Set of 16
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Part # 505221442
$459.99
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Details

Valve Spring Style:
Dual Spring
Outside Diameter:
1.560"
Maximum Lift:
.750"
Open Pressure:
660 lbs. at 1.25"
Seat Pressure:
260 lbs. at 2.00"
Inside Diameter:
.812"
MFG. Part #:
221442-16
Sold in Quantity:
Set
GTIN Code:
807298023953

Info

Manley's NexTek® valve springs are the latest in valve spring technology. The main benefit of the NexTek® springs is that they resist degradation of spring pressure in the later stages of a race. This is critical in oval track racing, where an engines valve train is abused for a long period of time. The spring inside diameter is chamfered for retainer clearance. The state-of-the-art winding process, thermal treatment and finishing practices cannot be duplicated, making these springs unique. The specially processed premium-grade chrome silicon is virtually free of impurities or surface irregularities, making for a high-quality, high-performance valve spring. NexTek® Series valve springs have been tested by leading engine builders and are confirmed to be the best performing valve springs on the market today!

  • Manufactured from ''super clean'' HiTensile Chrome Silicon steel
  • Shotpeened to MIL Specs for maximum fatigue life
  • Proprietary multistep heat treating minimizes load loss
  • Tightly controlled open end flatness reduces valve stem side loading
  • Tip thickness designed to eliminate overload breakage
  • No degradation of spring pressure in the later stages of a race
  • Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities
  • NexTek® Series valve springs have been tested by leading engine builders and are confirmed to be the best performing valve springs on the market today

Important Messages

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

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Videos & Articles
  • What happens when you advance or retard a camshaft? In this tech article, we explain the pros and cons of installing your cam straight up, advancing or retarding.
  • Learn the basics to engine performance like; how does a cam work? What is Valve lift, duration, lobe separation angle, and cam profiles? Afterwords selecting the right camshaft will be less of a guessing game!
  • One of the most important parts of your racing operation is the engine. This article gives a detailed overview on how to maintain your engine to get the most out of it for as long as possible. Also learn some tips to prolong the life of your engine.
  • Once you're ready to start selecting valve train components, we have some useful tips and tools that should boost your performance. We discuss proper valve-springs, pushrod length, and rocker arm ratios.
  • Learn how to re-build a junkyard Small Block Chevy. A step-by-step guide on how to select a SBC, machine the valve guide bosses down, and what parts to use to upgrade to your personal liking.
  • A guide on how to check piston to valve clearance to prevent interference. See what tools are used to make this process easier.
  • Rebuilding an engine? Stay organized by using a valvetrain rocker arm organizer tray while disassembling the valvetrain components. Learn some tips on why you shouldn't mix up lifters if you intend on using them again.

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