Conical Valve Springs, Dodge GEN 3 Hemi 5.7L, 6.4L 1.290" OD 136lbs@1.800" Installed, 438 lbs/inch rate,

Revolutionary Advancement In High Performance Valve Springs Technology

Comp Cams Conical Valve Springs:

• Reduced mass improves RPM stability

• Conical design offers the best natural frequency damping

• Dampens w/o wear, heat/friction or risk from interference contact

• Progressive frequency increases RPM limit & allows for more aggressive cams

• Superfinish surface processing increases both max lift capability & valve spring longevity

• Constantly decreasing diameter from bottom to top reduces active mass & decreases applied forces; Result is longer valve train component life & less parasitic horsepower loss

7228-16	Outer Dia.	Inner Dia.	Seat Load	Open Load	Coil Bind	Rate
Top	1.020"	.650"	136 @1.800"	412 @1.170"	1.125"	438
Bottom	1.290"	.920"

 

Spring Style:    Conical

Max Lift:      0.615

Installed Height:    1.8

O.D. of Outer:     1.030/1.286

I.D. of Outer:   .622/.918

Spring Rate:    440

Seat Pressure:     136

Coil Bind Height:     1.125

Damper:     No

Chromemoly Steel Retainers:    761-16  /   774-16  /   783-16

Spring Seat (.570" Guide Dia.):   4677-16

Steel Retainers:    1787-16  /   787-16

Titanium Retainers:   762-16  /   772-16  /   788-16

Tool Steel Retainers:    1772-16