Cylinder Head, Valve Guides and Valve Seats

Cylinder Head Warpage Limit 0.008
Cylinder Head Overall Thickness [01]
Valve Guides (Standard)
Inside Diameter 0.236
Stem-to-Guide Clearance
Intake 0.0008-0.0020
Exhaust 0.0016-0.0028
Valve Seats
Angle 44.00-44.50°
Width 0.035-0.051



All measurements given in inches, unless otherwise specified.

[01] Minimum thickness is overall thickness, less warpage limit, combined with amount of grinding of cylinder block gasket surface.