Dual Drag Race Valve Spring Spring OD: 1.514
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PAC RACING SPRINGSPART NUMBER: 278-1331-1

Dual Drag Race Valve Spring Spring OD: 1.514

$3744
ShippingShips on 09/14/2026
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Dual Drag Race Valve Springs
    Dual Drag Race Valve Spring
  • Spring OD: 1.514
  • Spring ID: 0.726
  • Seat Pressure: 425 LBS @ 2.200
  • Open Pressure: 1288 LBS @ 1.200
  • Spring Rate: 863
  • Max Coil Bind: 1.150
  • Max Lift: 1.000
  • 1/pkg
    PAC 1300 Series Dual Drag Race Valve Springs are designed to have a higher rate than traditional triple springs due to heat treating and alloy advancements for a reduction in physical mass with higher frequencies. These dual drag race valve springs are coiled with a process that enhances durability by engineering the outer spring precision to interface with the inner spring. A smaller, lighter designed retainer and specially formulated spring steel ensures consistency and performance that substantially increases the longevity in extreme conditions, such as professional drag racing. Advantages of 1300 series dual valve springs includes lighter mass, higher frequency, higher rate, extreme engine RPM capability, and increased horsepower.
Part TypeValve Spring
Product LinePAC 1300 Series Dual Drag Race Valve Springs
BrandPAC RACING SPRINGS
Package Height1.5
Package Width1.5
Package Length3.0
Weight0.33 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part NumberPAC-1331X
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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