Valve Seat
| Seat Angle | 45 Degrees (deg) |
| Seat Width, Intake | .060-.080 Inch (in) |
| Seat Width, Exhaust | .060-.080 Inch (in) |
| Runout | 0.003 Inch (in) |
| Seat Insert Bore Diameter, Intake | 1.8532-1.8542 Inch (in) |
| Seat Insert Bore Diameter, Exhaust | 1.5645 Inch (in) |