Pontiac Workshop Service and Repair Manuals

Crankshaft: Specifications

Main Journal Diameter ...................................................................................................................................  67.239 - 67.257 mm    (2.6473 - 2.6483 inch)
Main Journal Taper ..........................................................................................................................................................................  0.005 mm (0.0002 inch)
Out Of Round - Max ........................................................................................................................................................................  0.005 mm (0.0002 inch)
Flange Runout - Max .........................................................................................................................................................................  0.04 mm (0.0016 inch)
Cylinder Block Main Bearing Bore Diameter ...................................................................................................  72.155 - 72.168 mm (2.8407 - 2.8412 inch)
Crankshaft Main Bearing Inside Diameter ........................................................................................................  67.289 - 67.316 mm (2.6492 - 2.6502 inch)
Main Bearing Clearance ........................................................................................................................................  0.019 - 0.064 mm (0.0008 - 0.0025 inch)
Main Thrust Bearing Clearance ............................................................................................................................  0.032 - 0.077 mm (0.0012 - 0.0030 inch)
Crankshaft End Play ..............................................................................................................................................  0.060 - 0.210 mm (0.0024 - 0.0083 inch)
Crankshaft Flange Runout - Max .......................................................................................................................................................  0.04 mm (0.0016 inch)
Crankshaft Main Bearing Cap Bolt/Stud

First Pass ................................................................................................................................................................................................ 50 Nm (37 ft. lbs.)
Final Pass ........................................................................................................................................................................................................ (77 degrees)

Crankshaft Oil Deflector Nut ....................................................................................................................................................................  25 Nm (18 ft. lbs.)