Valve Spring: Specifications
| Valve Spring Standard Engine | Free Length | 1.84 Inch (in) |
| Nominal Force (Valve Closed) | 70 at 1.57 Pound Force At Inch (lbf @ in) | |
| Nominal Force (Valve Open) | 160 at 1.28 Pound Force At Inch (lbf @ in) | |
| Installed Height | 1.580 Inch (in) | |
| Valve Spring High Output R/T | Free Length | 2.13 Inch (in) |
| Nominal Force (Valve Closed) | 72 at 1.57 Pound Force At Inch (lbf @ in) | |
| Nominal Force (Valve Open) | 167 at 1.28 Pound Force At Inch (lbf @ in) | |
| Installed Height | 1.580 Inch (in) |