PAC Racing PAC-1227-16 Circle Track Valve Springs 1.539 OD

PAC Racing designed these PAC-1227-16 Valve Springs for Circle Track 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-1227-16 Valve Springs Specs:

• Number of Springs Per Valve: Dual
  
• Valve Spring Style: Standard
• Maximum Valve Lift: 0.700 in.
• Outside Diameter: 1.539 in.
• Outer Spring ID: 1.125 in.
• Middle Spring ID: N/A
• Inner Spring ID: 0.731 in.
• Installed Height: 1.950 in.
• Coil Bind Height: 1.130 in.
• Spring Rate: 500 lbs./in.
• Spring Open Height: 1.250 in.
• Spring Open Load: 550 lbs.
• Load At Installed Height: 200 lbs.
• Damper Spring Included: Yes
• 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!