Engine Mechanical Specifications

Camshaft Bearing Bore Diameter
Front and Rear 51.03-51.08 mm (2.009-2.011 in)
Middle #2, #3 50.77-50.82 mm (1.999-2.001 in)

Camshaft
Camshaft Bearing Inside Diameter 51.500-51.525 mm (2.028-2.029 in)
Camshaft Journal Diameter 51.415-51.440 mm (2.024-2.025 in)
Camshaft Journal Out-of-Round 0.025 mm (0.001 in)
Camshaft Lobe Lift - Exhaust 6.9263 mm (0.2727 in)
Camshaft Lobe Lift - Intake 6.9263 mm (0.2727 in)

Cylinder Head
Combustion Chamber Depth - at Measurement Point 2.2 mm (0.087 in)
Surface Finish - Maximum 2.8 RA
Surface Flatness - Block Deck 0.08 mm Per 152 mm (0.003 in Per 6 in)
Surface Flatness - Exhaust Manifold Deck 0.1 mm (0.004 in)
Surface Flatness - Intake Manifold Deck 0.1 mm (0.004 in)
Valve Guide Bore - Exhaust 8.01 mm (0.315 in)
Valve Guide Bore - Intake 8.01 mm (0.315 in)
Valve Guide Installed Height 16.6 mm (0.654 in)