PAC Racing designed these PAC-1208X RPM Series Valve Springs
for GM Gen III/IV LS engine circle track and drag racing applications.
These RPM Series springs were developed to allow for performance
increases that exceed all demands. They 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-1208X RPM Series LS Valve Springs Specs:
- Number of Springs Per Valve: Dual
- Valve Spring Style: Standard
- Maximum Valve Lift: 0.750 in.
- Outside Diameter: 1.324 in.
- Outer Spring ID: 0.950 in.
- Middle Spring ID: N/A
- Inner Spring ID: 0.694 in.
- Installed Height: 1.800 in.
- Coil Bind Height: 1.000 in.
- Spring Rate: 460 lbs./in.
- Spring Open Height: 1.100 in.
- Spring Open Load: 482 lbs.
- Load At Installed Height: 160 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!
