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PAC-1371-16 PART NUMBER
PAC Circle Track Dual Valve Springs PAC-1371$420.26Dual Spring, 1.374" Outer Diameter, 1.000 ID outer, .716" Inner Diameter, Seat Pressure 150 @ 1.950, Open Pressure 455 @ 1.250, Coil Bind 1.175", Set of 16 Springs
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PAC-1916-16 PART NUMBER
PAC Hot Rod Series Valve Springs PAC-1916$172.33Dual Spring, 1.538" Outer Diameter, 1.140" ID outer, 0.752" Inner Diameter, Seat Pressure 157 @ 1.850, Open Pressure 440 @ 1.200, Coil Bind 1.135", Set of 16 Springs
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