PAC Racing PAC-1247-16 Drag Race Valve Springs 1.645 OD

PAC Racing designed these PAC-1247-16 Valve Springs for Drag Race 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-1247-16 Valve Springs Specs:

• Number of Springs Per Valve: Triple
  
• Valve Spring Style: Standard
• Maximum Valve Lift: 0.800 in.
• Outside Diameter: 1.645 in.
• Outer Spring ID: 1.195 in.
• Middle Spring ID: 0.871 in.
  
• Inner Spring ID: 0.635 in.
• Installed Height: 2.070 in.
• Coil Bind Height: 1.130 in.
• Spring Rate: 682 lbs./in.
• Spring Open Height: 1.270 in.
• Spring Open Load: 835 lbs.
• Load At Installed Height: 290 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!