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PAC-1370-16 PART NUMBER
PAC 1300 Series Drag Race Valve Springs PAC-1370$640.39Dual Spring, 1.550" Outer Diameter, 1.065" ID of outer spring, 0.740" ID of inner spring, Seat Pressure 555 @ 2.350, Open Pressure 1433 @ 1.300, Coil Bind 1.230", Set of 16 Springs
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PAC-1366L-16 PART NUMBER
PAC 1300 Series Drag Race Valve Springs PAC-1366L$667.08Triple Spring, 1.710" Outer Diameter, 1.210" ID of outer spring, 0.871" ID of middle, 0.635" ID of inner spring, Seat Pressure 380 @ 2.550, Open Pressure 1545 @ 1.250, Coil Bind 1.146", Set of 16 Springs
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PAC-1323-16 PART NUMBER
PAC 1300 Series Drag Race Valve Springs PAC-1323$640.39Dual Spring, 1.551" Outer Diameter, 1.065" ID of outer spring, 0.725" ID of inner spring, Seat Pressure 525 @ 2.350, Open Pressure 1510 @ 1.300, Coil Bind 1.200", Set of 16 Springs
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