PAC Racing PAC-1222X-16 RPM LS Valve Springs 1.280 OD

PAC Racing designed these PAC-1222X-16 Valve Springs for GM LS Gen III/IV applications using aftermarket cylinder heads. These RPM 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-1222X-16 Valve Springs Specs:

• Number of Springs Per Valve: Dual
• Valve Spring Style: Standard
• Maximum Valve Lift: 0.700 in.
• Outside Diameter of Outer Spring: 1.280 in.
• Inside Diameter of Outer Spring: 0.925 in.
• Inner Diameter of Inner Spring: 0.655 in.
• Installed Height: 1.800 in.
• Coil Bind Height: 1.055 in.
• Spring Rate: 425 lbs./in.
• Spring Open Height: 1.100 in.
• Spring Open Load: 480 lbs.
• Load At Installed Height: 180 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!