Valves

Stem Diameter
Intake 0.2587-0.2591
Exhaust 0.2571-0.2579
Clearance
Intake
Hot 0.008
Cold 0.004
Exhaust
Hot 0.010
Cold 0.007
Face Angle 45.0-45.5°
Margin (Minimum)
Intake 0.020
Exhaust 0.039

All measurements given in inches, unless otherwise specified.