Pontiac Workshop Service and Repair Manuals

Crankshaft: Specifications

Crankshaft - Main Bearings Journal
Diameter ..........................................................................................................................................................  All 63.470 - 63.495 mm (2.4988-2.4998 in.)
Taper ........................................................................................................................................................................................  Max 0.0008 mm (0.0003 in.)
Runout ......................................................................................................................................................................................  Max 0.0008 mm (0.0003 in.)
Bearing to Journal Clearance ..............................................................................................................................  0.020 mm - 0.055 mm (0.0008-0.0022 in.)
Main Bearing Bore ID .............................................................................................................................................  68.250 - 68.275 mm (2.687 - 2.688 in.)
Crankshaft End Play ......................................................................................................................................................  0.076 - 0.279 mm (0.003-0.011 in.)

Connecting Rod Bearings

Diameter ................................................................................................................................................................  57.117 - 57.147 mm (2.2487-2.2499 in.)
Taper ........................................................................................................................................................................................  Max 0.0008 mm (0.0003 in.)
Runout ......................................................................................................................................................................................  Max 0.0008 mm (0.0003 in.)
Bearing to Journal Clearance ..................................................................................................................................  0.02mm - 0.055 mm (0.00080.0022 in.)
Rod Side Clearance ......................................................................................................................................................  0.076 - 0.381 mm (0.003 - 0.015 in.)
Connecting Rod Large End Bore ID ......................................................................................................................  60.295 - 60.312 mm (2.3738-2.3745 in.)