800.345.4545
Unrivaled Customer Service
And Expert Tech Advice!  
FREE SHIPPING!
Same Day Shipping Before 11 PM ET
0
My Cart
0
$0.00
Shop By Vehicle
Shop By
Category
Close Menu
Shop By Vehicle
Top Categories
All Categories

Top Categories

Brakes & Drivetrain
Brakes & Drivetrain
Cooling, AC & Heating
Cooling, AC & Heating
Engines & Components
Engines & Components
Exhaust Systems
Exhaust Systems
Fuel, Carbs & Intakes
Fuel, Carbs & Intakes
Fittings & Hose
Fittings & Hose
Ignition & Electrical
Ignition & Electrical
Safety & Seats
Safety & Seats
Transmission & Drivetrain
Transmission & Drivetrain
Wheels & Tires
Wheels & Tires

All Categories

Air Filters & Cold Air Kits
Air Filters & Cold Air Kits
Apparel, Hats & Shoes
Apparel, Hats & Shoes
Batteries & Accessories
Batteries & Accessories
Bracket Racing
Bracket Racing
Cameras
Cameras
Cams & Valvetrain
Cams & Valvetrain
Car Care
Car Care
Chrome & Engine Dress-Up
Chrome & Engine Dress-Up
Circle Track
Circle Track
Collectibles & Books
Collectibles & Books
Computer Tuning
Computer Tuning
Fasteners & Gaskets
Fasteners & Gaskets
Gauges & Tachs
Gauges & Tachs
Golf Cart Accessories
Golf Cart Accessories
Hoods, Scoops & Body
Hoods, Scoops & Body
Interior Accessories
Interior Accessories
Jeep Parts & Accessories
Jeep Parts & Accessories
JEGS Easy Kits
JEGS Easy Kits
Jr. Dragster
Jr. Dragster
LS / LT Performance
LS / LT Performance
Mopar Performance
Mopar Performance
Mustang & Ford Racing
Mustang & Ford Racing
Oil System
Oil System
Power Adders
Power Adders
RC Car, Truck & Helicopter
RC Car, Truck & Helicopter
Restoration
Restoration
Shifters
Shifters
Starters & Alternators
Starters & Alternators
Steering & Suspension
Steering & Suspension
Timing Chains & Pulleys
Timing Chains & Pulleys
Tools & Garage Gear
Tools & Garage Gear
Trailer, Towing & Winches
Trailer, Towing & Winches
Truck Parts & Accessories
Truck Parts & Accessories
Shop By Brand
Shop Deals
Shop New Products
Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates
Rebates
Help
View All Manley NexTek Series Drag Race Valve Springs
Manley

Manley NexTek Drag Race Valve Springs 1.677" O.D.

Manley 221447-16

660-221447-16

jegs shipping
FREE Shipping
Ships directly from the manufacturer
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
Manley NexTek Drag Race Valve Springs 1.677" O.D. $517.99
NexTek Drag Race Valve Springs
  • 1.677'' O.D.
  • 0.635'' I.D.
  • 746 lbs./in. Spring Rate
  • 350 @ 2.000'' Installed
  • 895 @ 1.270'' Open
  • 0.800'' Max Valve Lift
  • 1.160'' Coil Bind
  • Triple Spring (No Damper)
  • 16/pkg.

    • Manley 221447-16 Details

    1.677'' O.D. Triple Valve Springs

    Note: Advertised pressures are achieved after springs have been pressed solid three times.

  • Type of Spring: Triple without Damper
  • Color Code: Pink Stripe
  • Installed Height and Pressure: 2.000'' @ 350 lbs./in.
  • Open Height and Pressure: 1.270'' @ 895 lbs./in.
  • Spring Rate: 746 lbs./in.
  • O.D. of Outer Spring: 1.677''
  • I.D. of Outer Spring: 1.203''
  • I.D. of Middle Spring: 0.874''
  • I.D. of Inner Spring: 0.635''
  • Coil Bind height: 1.160''
  • Weight: 195 grams
  • Damper Included: No

    Click Here to see 660-221447 Valve Spring Load Chart

    • Specifications:

    Coil Bind Height (in.)
    1.16
    Coated
    No
    Damper Spring Included
    No
    Inside Diameter of Inner Spring (in.)
    0.635
    Inside Diameter of Outer Spring (in.)
    1.195
    Number of Springs Per Valve
    Triple
    Outside Diameter of Outer Spring (in.)
    1.677
    Quantity
    Sold as a set of 16
    Spring Rate
    746 lbs./in.
    Valve Spring Style
    Standard
    Manufacturer's Part Number:
    221447-16

    NexTek Valve Springs...Better By Design!

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

    Features:
  • Higher natural frequency provides improved valvetrain control and higher RPM potential
  • All springs are triple design springs except for 660-221424, 660-221425 & 660-221454 which are double design without damper
  • Extensively tested on the Spintron, dyno and race track (including blown nitro engines) and proven highly effective
  • Smaller diameter, lightweight dual design allows engine to rev higher with improved valve train control
  • Better valvetrain stability and component life
  • Ultra clean, high tensile strength chrome silicon steel
  • Polish Finish surface reduces friction, improves fatigue life and minimize load loss.
  • Ideal loads for multiple applications with minimal load loss

    Click Here to see Valve Springs Load Chart

    • Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations