Valve Seat
| Angle | 44.5 - 45 degrees F |
| Seat Diameter-Intake | 1.353 - 1.363 inch |
| Seat Diameter-Exhaust | 1.065 - 1.075 inch |
| Runout (Maximum) | 0.002 inch |
| Valve Seat Width-Intake and Exhaust | 0.035 - 0.051 inch |
| Service Limit-Intake | 0.079 inch |
| Service Limit-Exhaust | 0.098 inch |