Conical Valve Springs, Dodge GEN 3 Hemi 5.7L, 6.4L 1.290" OD 136lbs@1.800" Installed, 438 lbs/inch rate,
.630" Lift Race Street Conical
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Description
Revolutionary Advancement In High Performance Valve Springs Technology
Comp Cams Conical Valve Springs:
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Reduced mass improves RPM stability
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Conical design offers the best natural frequency damping
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Dampens w/o wear, heat/friction or risk from interference contact
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Progressive frequency increases RPM limit & allows for more aggressive cams
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Superfinish surface processing increases both max lift capability & valve spring longevity
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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
Specifications
| SKU | 7228-16 |
| Barcode # | 036584283157 |
| Brand | COMP CAMS |
| Seat Height | 1.8 |
| Damper | No |
| Seat Pressure | 136 |
| Number Of Springs | 1 |
| Valve Spring Series | Race/Street |
| Coil Bind Height | 1.125 |
| Spring Rate | 440 |
| Outer Top Spring Outside Diameter | 1.03 |
| Outer Top Spring Inside Diameter | 0.662 |
| Outer Bottom Spring Outside Diameter | 1.286 |
| outer bottom spring inside diameter | 0.918 |
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