Valve Seat: Specifications
| Valve Seat | Angle | Standard | 45 Degrees (deg) | |
| Diameter | Intake | Standard | 1.299 Inch (in) | |
| Exhaust | Standard | 1.102 Inch (in) | ||
| Runout | Max.imum | 0.002 Inch (in) | ||
| Width | Intake and Exhaust | Standard | 0.035-0.051 Inch (in) | |
| Intake | Service Limit | 0.079 Inch (in) | ||
| Exhaust | Service Limit | 0.098 Inch (in) |