VIPER 8.4L V10 - GEN 4 & 5 Type/Material/Application: Single Beehive Ovate. PAC Alloy High Lift - Street and Strip Use Premium RPM Performance processing Outside Diameter: 1.100/1.445 Inside Diameter: 0.650/1.000 Seat Pressure: 170 lbs/@ 1.965? Open Pressure: 440 lbs @ 1.280 Rate Inch: 394 lbs Coil Bind: 1.240? Max Net Lift: 0.685? This Spring requires Ferrea Tool Steel Retainer #E20058 and BOTH, Ferrea Spring Seat Locator #SL1157 and SL1158 (Hat Seal) or Factory supplied Hat Seal Seat Locator.
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