Valve Spring
| Free Length Intake | 1.96 Inch (in) |
| Free Length Exhaust | 1.78 Inch (in) |
| Out Of Square Limit | 0.078 Inch (in) |
| Installed Height Intake | 1.61-1.67 Inch (in) |
| Installed Height Exhaust | 1.44-1.50 Inch (in) |
| Spring Pressure, Closed, Intake | 66-74 at 1.64 Pound Force At Inch (lbf @ in) |
| Spring Pressure, Closed, Exhaust | 66-74 at 1.47 Pound Force At Inch (lbf @ in) |
| Spring Pressure, Open, Intake | 166-184 at 1.24 Pound Force At Inch (lbf @ in) |
| Spring Pressure, Open, Exhaust | 166-184 at 1.07 Pound Force At Inch (lbf @ in) |