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VALVES DESCRIPTION SPECIFICATION Face Angle 45° - 45.5° Head Diameter Intake 48.52 - 48.78 mm (1.9103 - 1.9205 in.) Exhaust 36.87 - 37.13 mm (1.4516 - 1.4618 in.) Length (Overall) Intake 113.45 - 114.21 mm (4.4666 - 4.4965) Exhaust 114.92 - 115.68 mm (4.5244 - 4.5543 in.) Stem Diameter Intake 6.931 - 6.957 mm (0.2729 - 0.2739 in.) Exhaust 6.902 - 6.928 mm (0.2717 - 0.2728 in.) Stem - to - Guide Clearance Intake 0.018 - 0.069 mm (0.0008 - 0.0028 in.) Exhaust 0.047 - 0.098 mm (0.0019 - 0.0039 in.) Max. Allowable Stem - to - Guide Clearance (Rocking Intake 0.069 mm (0.0028 in.) Exhaust 0.098 mm (0.0039 in.) Valve Lift (Zero Lash) Intake 11.25 mm (0.443 in.) Exhaust 10.90 mm (0.4292 in.) HB ENGINE - 4.7L SERVICE INFORMATION 9 - 1215 |