221431-16 Manley Valve Spring

NexTek H.P.

Valve Springs for 5.7/6.1L HEMI.

1.311'' O.D.

0.650'' I.D.

353 lbs./in.

Spring Rate 145 @ 1.811'' Installed 370 @ 1.161'' Open 0.650'' Max Valve Lift 1.100'' Coil Bind Single Conical Ovate Wire 16/pkg.

High performance hydraulic roller applications for Chrysler 5.7L/6.1L HEMI.

Note: Shims are included for 6.1L applications on the intake side to achieve the correct installed height.

Each set includes piloting rings that install over the factory ''Top Hat'' integral valve seal to properly locate the I.D.

of the spring on early 5.7L (thru 2008) and 6.1L applications.

P/N 221431X-16 does not include shims or piloting rings for Hemi Drag Pak engines.

Type of Spring: Super Finished Single Conical Ovate Wire.

Installed Height and Pressure: 1.811'' @ 145 lbs./in.

Open Height and Pressure: 1.161'' @ 370 lbs./in.

Spring Rate: 353 lbs./in.

O.D.

of Outer Spring: 1.076'' Top / 1.311'' Bottom.

I.D.

of Outer Spring: 0.650'' Top / 0.885'' Bottom.

I.D.

of Middle Spring: N/A.

I.D.

of Inner Spring: N/A.

Coil Bind height: 1.100''.

Weight: 72 grams.

Damper Included: No.