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PAC-1385-16 PART NUMBER
PAC Circle Track Dual Valve Springs PAC-1385$640.39Dual Spring, 1.564" Outer Diameter, 1.150 ID outer, .744" Inner Diameter, Seat Pressure 250 @ 2.000, Open Pressure 670 @ 1.200, Coil Bind 1.145", Set of 16 Springs
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PAC-1921-16 PART NUMBER
PAC Hot Rod Valve Springs PAC-1921$138.00Hot Rod Single Spring, 1.460" OD Outer, ID Outer 1.060" ID Inner, 0.970", Seat Pressure 109 @ 1.850, Open Pressure 293 @ 1.250, Coil Bind 1.145, Max lift 0.600", Set of 16
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