Valve Spring
| Valve Spring Free Length | 2.03 Inch (in) Note: Damper spring, 1.86 inches. |
| Valve Spring Installed Height | 1.71 Inch (in) Note: Exhaust, 1.59 inches. |
| Seat Pressure | 76-84 at 1.70 Pound Force At Inch (lbf @ in) Note: Exhaust, 76-84 lbs. @ 1.61 inches. |
| Compressed Pressure | 194-206 at 1.25 Pound Force At Inch (lbf @ in) Note: Exhaust,196-204 lbs. @ 1.16 inches. |
| Out Of Square Limit | 0.062 Inch (in) |