Valve Spring: Specifications
| Free Length | Intake & Exhaust (Approximately) | 1.7965 Inch (in) |
| Spring Force | Intake & Exhaust (Valve Closed) | 56.0 - 64.0 at 1.4961 Pound Force At Inch (lbf @ in) |
| Intake (Valve Open) | 147.9 - 162.1 at 11.1417 Pound Force At Inch (lbf @ in) | |
| Exhaust (Valve Open) | 138.0 - 150.8 at 1.1811 Pound Force At Inch (lbf @ in) | |
| Number of Coils | Intake & Exhaust | 7.35 |
| Wire Diameter | Intake & Exhaust | 0.1520 Inch (in) |
| Installed Height | Spring seat to bottom of retainer | 1.4961 Inch (in) |