Valve Spring: Specifications
| Valve Spring Free Length | 2.08 Inch (in) |
| Valve Spring Installed Height (Exhaust) | 1.8 Inch (in) |
| Valve Spring Installed Height (Intake) | 1.8 Inch (in) |
| Valve Spring Pressure (Closed) | 76 Pound-Force (lbf) at 1.8 inch |
| Valve Spring Pressure (Open) | 220 Pound-Force (lbf) at 1.32 inch |