Gasket Surface Variation

SERVICE SPECIFICATIONS
Cylinder Head Engine Block Deck Flatness:
Measured Within A 152.4 mm (6.0 inch) Area 0.11 mm (0.004 inch)
Measuring Overall Length Of Head 0.22 mm (0.008 inch)
Cylinder Head Exhaust Manifold Deck Flatness 0.22 mm (0.008 inch)
Cylinder Head Intake Manifold Deck Flatness 0.22 mm (0.008 inch)
Cylinder Head Height:
Measured From Cylinder Head Deck To Valve Rocker Arm Cover Seal Surface:
Minimum 120.2 mm (4.732 inch)