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    1. PAC-1386-16 PART NUMBER
      PAC Circle Track Endurance Valve Springs PAC-1200
      PAC Circle Track Dual Valve Springs PAC-1386
      $640.39
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      Dual Spring, 1.564" Outer Diameter, 1.150 ID outer, .826" Inner Diameter, Seat Pressure 245 @ 2.000, Open Pressure 655 @ 1.200, Coil Bind 1.140", Set of 16 Springs

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    2. PAC-1392-16 PART NUMBER
      PAC Circle Track Endurance Valve Springs PAC-1200
      PAC Circle Track Dual Valve Springs PAC-1392
      $640.39
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      Dual Spring, 1.314" Outer Diameter, 0.900 ID outer, .616" Inner Diameter, Seat Pressure 185 @ 2.060, Open Pressure 730 @ 1.260, Coil Bind 1.196", Set of 16 Springs

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    3. PAC-1393-16 PART NUMBER
      PAC Circle Track Endurance Valve Springs PAC-1200
      PAC Circle Track Dual Valve Springs PAC-1393
      $697.10
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      Dual Spring, 1.536" Outer Diameter, 1.100 ID outer, .694" Inner Diameter, Seat Pressure 250 @ 2.000, Open Pressure 773 @ 1.200, Coil Bind 1.154", Set of 16 Springs

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    Engines
    CNC-Motorsports offers the best crate engines and race engines you can buy. We specialize in domesti...
    Engine Parts
    CNC-Motorsports offers the best brands in aftermarket performance auto parts. We specialize in perfo...
    Air & Fuel > Carburetor Accessories
    Air & Fuel > Carburetor Accessories > Metering Blocks & Conversion Kits
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    YOUR SOURCE FOR Custom & High Performance Engine Parts Complete Engine Short Block Rot...
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    Shipping & Delivery All items are shipped through UPS Ground, FedEx or USPS, unless special...
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    1. Spring Rate (LBS./IN.)
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