Valve Seat

Cylinder Head Warpage Limit 0.002 inches
Cylinder Head Minimum Thickness 3.935 inches
Valve Guides:
Standard Inside Diameter 0.2171-0.2177 inches
Stem To Guide Clearance:
Intake 0.0008-0.0018 inches
Exhaust 0.0022-0.0031 inches

Valve Seats:
Seat Angle, Degrees 45
Seat Width:
Intake 0.049-0.061 inches
Exhaust 0.049-0.061 inches