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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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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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