Manley Alcohol/Fuel Classes/ProMod NexTek Series High Performance Valve Springs

221461-16

Today, Manley Performance continues to re-define itself in a high performance aftermarket industry that is constantly evolving. We've developed new products for growing markets such as sport compact, Ford modular and Chevy LS; as well as maintained our leadership role with the traditional V-8 engine business.

Features:

• Lightweight Dual Drag Race Valve Springs
• Higher natural frequency and lower active mass provides improved valvetrain control and higher RPM potential
• Dual spring design reduces friction, which generates less heat and translates into greatly reduced load loss
• 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
• Accepts smaller, lighter retainers which also promotes higher revs
• Ultra clean, high tensile strength chrome silicon material
• Super Finished multi-step surface enhancement significantly improves fatigue strength
• Ideal loads for multiple applications with minimal load loss

Specifications:

• Description: Alcohol &?Fuel Classes, Pro Mod
• Maximum Valve Lift: 1.000
• O.D.: 1.540
• I.D.: .710
• Installed / Open Pressure: 425 @ 2.300 | 1389 @ 1.300
• Rate ( lbs. / in.): 964
• Coil Bind: 1.215
• Weight (grams): 154
• Component Code: A