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Home >> Pontiac >> 1988 >> Firebird Base, 5.0 E, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 5.0L & 5.7L V8 - VINS F & 8 >> Removal & Installation >> Camshaft >> Inspection

Removal & Installation: Camshaft: Inspection

  1. Check camshaft journals for out-of-round condition. If journals exceed .001" (.025 mm) out-of-round, replace camshaft and lifters. Check camshaft end play. Standard end play is .0040-.0012" (.038-.127 mm). If not to specification, check camshaft end cover for grooves or wear. Replace as necessary.
  2. Check camshaft lobe lift. Attach dial indicator with a ball/socket attachment to camshaft carrier or "V" block. Measure lobe lift. If lobe lift loss is more than .002" (.05 mm), replace camshaft. Check camshaft journal-to-bearing clearance. Standard clearance is .0010-.0040" (.025-.101 mm).
NOTE: Camshaft lobes are ground, hardened and tapered with high side of lobe toward rear of engine. This causes valve lifters to rotate.
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