Valve Seat
| Valve Seat Bore | Intake | 1.315 - 1.316 Inch (in) |
| Exhaust | 1.118 - 1.119 Inch (in) | |
| Valve Seat Outside Diameter | Intake | 1.3185 - 1.3193 Inch (in) |
| Exhaust | 1.121 - 1.122 Inch (in) | |
| Intake Width | Standard | 0.0394 - 0.0512 Inch (in) |
| Service Limit | 0.0653 Inch (in) | |
| Exhaust Width | Standard | 0.0512 - 0.0630 Inch (in) |
| Service Limit | 0.0756 Inch (in) | |
| Angle (Intake and Exhaust) | Standard | 44.5 - 45.5 Degrees (deg) |
| Service Limit | 44.5 - 45.0 Degrees (deg) |