PAC Racing RPM Series Dual Valve Springs — Fits GM LS-Series

SKU: DHDL_PAC-1222X-16
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Ultimate Strength for LS EnginesFor high-horsepower GM LS-Series builds, the ...Read More

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

Ultimate Strength for LS Engines

For high-horsepower GM LS-Series builds, the PAC Racing RPM Series Dual Valve Springs are the gold standard. These dual-spring assemblies provide the necessary pressure to handle aggressive camshaft profiles and high-RPM operation, ensuring your valves stay seated exactly when they need to. The dual-spring design offers a redundant safety layer, providing peace of mind for high-performance street and track applications.

Performance Specs

  • Spring Rate: 425 lb/in
  • Outside Diameter: 1.280 in
  • Coil Bind: 1.055 in
  • Type: Dual Valve Spring
  • Set of 16

These springs are built to withstand the rigors of forced induction or high-compression naturally aspirated setups. By utilizing premium materials and precise manufacturing tolerances, PAC Racing ensures that each spring in the set provides uniform pressure, resulting in smooth engine operation and consistent power delivery. The dual-spring configuration is specifically engineered to handle the increased lift and duration of modern performance camshafts, making them an essential component for any serious engine project. Whether you are building for the drag strip or the street, these springs provide the reliability you need. Find all your performance valvetrain needs at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

Ultimate Strength for LS Engines

For high-horsepower GM LS-Series builds, the PAC Racing RPM Series Dual Valve Springs are the gold standard. These dual-spring assemblies provide the necessary pressure to handle aggressive camshaft profiles and high-RPM operation, ensuring your valves stay seated exactly when they need to. The dual-spring design offers a redundant safety layer, providing peace of mind for high-performance street and track applications.

Performance Specs

  • Spring Rate: 425 lb/in
  • Outside Diameter: 1.280 in
  • Coil Bind: 1.055 in
  • Type: Dual Valve Spring
  • Set of 16

These springs are built to withstand the rigors of forced induction or high-compression naturally aspirated setups. By utilizing premium materials and precise manufacturing tolerances, PAC Racing ensures that each spring in the set provides uniform pressure, resulting in smooth engine operation and consistent power delivery. The dual-spring configuration is specifically engineered to handle the increased lift and duration of modern performance camshafts, making them an essential component for any serious engine project. Whether you are building for the drag strip or the street, these springs provide the reliability you need. Find all your performance valvetrain needs at GGCRACING.

Product Details

Product Description

Ultimate Strength for LS Engines

For high-horsepower GM LS-Series builds, the PAC Racing RPM Series Dual Valve Springs are the gold standard. These dual-spring assemblies provide the necessary pressure to handle aggressive camshaft profiles and high-RPM operation, ensuring your valves stay seated exactly when they need to. The dual-spring design offers a redundant safety layer, providing peace of mind for high-performance street and track applications.

Performance Specs

  • Spring Rate: 425 lb/in
  • Outside Diameter: 1.280 in
  • Coil Bind: 1.055 in
  • Type: Dual Valve Spring
  • Set of 16

These springs are built to withstand the rigors of forced induction or high-compression naturally aspirated setups. By utilizing premium materials and precise manufacturing tolerances, PAC Racing ensures that each spring in the set provides uniform pressure, resulting in smooth engine operation and consistent power delivery. The dual-spring configuration is specifically engineered to handle the increased lift and duration of modern performance camshafts, making them an essential component for any serious engine project. Whether you are building for the drag strip or the street, these springs provide the reliability you need. Find all your performance valvetrain needs at GGCRACING.

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