Valve Spring
| Intake valve spring free length | 2.06 Inch (in) | |
| Exhaust valve spring free length | 1.89 Inch (in) | |
| Intake valve spring assembled height | 1.75 - 1.81 Inch (in) | |
| Exhaust valve spring assembled height | 1.58 - 1.64 Inch (in) | |
| Valve spring out of square | 0.078 Inch (in) | |
| Spring compression pressure at specified height (lbs.) | Intake valve | 190-210 at 1.20 |
| 74-82 at 1.78 | ||
| Exhaust valve | 190-210 at 1.20 | |
| 76-84 at 1.60 |