PAC Racing PAC-1228-16 Drag Race Valve Springs 1.625 OD

PAC Racing designed these PAC-1228-16 Valve Springs for Drag Racing applications. These 1200 Series springs are manufactured from a premium alloy that outperforms automotive industry standards. PAC Racing processes these springs to aerospace shot-peening standards to allow for superior fatigue performance.

PAC Racing's proprietary process ensures that these valve springs will withstand the rigors of street performance and mild racing applications.

PAC Racing PAC-1228-16 Valve Springs Specs:

• Number of Springs Per Valve: Dual
  
• Valve Spring Style: Standard
• Maximum Valve Lift: 0.900 in.
• Outside Diameter: 1.625 in.
• Outer Spring ID: 1.175 in.
• Middle Spring ID: N/A
• Inner Spring ID: 0.851 in.
• Installed Height: 2.100 in.
• Coil Bind Height: 1.100 in.
• Spring Rate: 629 lbs./in.
• Spring Open Height: 1.150 in.
• Spring Open Load: 847 lbs.
• Load At Installed Height: 280 lbs.
• Damper Spring Included: No
  
• Retainers Included: No
• Valve Springs Coated: No
• Valve Stem Seals Included: No
• Locks Included: No
• Quantity: Sold as a set of 16

PAC: The World’s Premier Valve Spring Manufacturer!