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Spring Engine Valve Spring Inside Diameter 1.010/1.030 Outside Diameter 1.384/1.404 Closed Pressure 108-120 @ 1.455 Open Pressure 200-216 @ 1.220

Spring Engine Valve Spring Inside Diameter 0.941 Outside Diameter 1.295 Closed Pressure 97-113 @ 1.455 Open Pressure 149-165 @ 1.255

Spring Engine Valve Spring Inside Diameter 0.923/0.943 Outside Diameter 1.287/1.307 Closed Pressure 61-69 @ 1.577 Open Pressure 172-188 @ 1.156

High Performance Spring

Spring Engine Valve Spring Inside Diameter 0.930T Outside Diameter 1.350T Closed Pressure 74 @ 1.700 Open Pressure 230 @ 1.260

Spring Engine Valve Spring Inside Diameter 0.930 Outside Diameter 1.290 Closed Pressure 86-94 @ 1.701 Open Pressure 209-221 @ 1.291

Spring Engine Valve Spring Inside Diameter 0.837/0.958 Outside Diameter 1.312 Closed Pressure 81-89 @ 1.640 Open Pressure 192-208 @ 1.216

Spring Engine Valve Spring Inside Diameter 0.670/1.020 Outside Diameter 1.044/1.394 Closed Pressure 90-100 @ 1.570 Open Pressure 207-229 @ 1.170

Spring Engine Valve Spring Inside Diameter 1.004/1.034 Outside Diameter 1.330/1.360 Closed Pressure 66-74 @ 1.600 Open Pressure 168-188 @ 1.200

Spring Engine Valve Spring Inside Diameter 1.004 Outside Diameter 1.349 Closed Pressure 85.9-93.9 @ 1.585 Open Pressure 167.3-178.9 @ 1.222

Spring Engine Valve Spring Inside Diameter 0.781/0.807 Outside Diameter 1.037 Closed Pressure 18-23 @ 1.67 Open Pressure 66-74 @ 1.072

Spring Engine Valve Spring Inside Diameter 1.069 Outside Diameter 1.469 Closed Pressure 50-61 @ 2.100 Open Pressure 171-189 @ 1.530

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