| Maximum Warpage |
| Cylinder Head Surface |
.002" (.05 mm) |
| Manifold Surfaces |
.0039" (.099 mm) |
| Intake & Exhaust |
| Cylinder Head Valve Guide Bore |
| Standard |
.4431-.4341" (11.000-11.026 mm) |
| Oversize |
.4350-.4361" (11.049-11.077 mm) |
| Maximum |
.4361" (11.077 mm) |
| Valve Seat Contact Surface Refinishing Angles |
| Above Seat Contact Surface |
30° |
| Below Seat Contact Surface |
75° |
| Seat Contact Surface |
45° |
| Valve Seat Contact Width |
.047-.063" (1.19-1.60 mm) |
| Valve Guide |
.2366-.2374" (6.010-6.029 mm) |
| Valve Guide Installed Height |
.500-.516" (12.70-13.11 mm) |
| Exhaust |
| Valve Stem-To-Guide Oil Clearance |
| Standard |
.0012-.0026" (.030-.066 mm) |
| Wear Limit |
.0039" (.099 mm) |
| Intake |
| Valve Stem-To-Guide Oil Clearance |
| Standard |
.0010-.0024" (.025-.061 mm) |
| Wear Limit |
.0031" (.079 mm) |