Valve Spring
| Valve Spring Free Length | 2.08 Inch (in) |
| Valve Spring Installed Height | 1.66 Inch (in) |
| Seat Pressure | 78-86 at 1.66 Pound Force At Inch (lbf @ in) |
| Compressed Pressure | 122-180 at 1.25 Pound Force At Inch (lbf @ in) Note: 1985-86, 170-180 lbs. @1.26 inches. |
| Out Of Square Limit | 0.062 Inch (in) |