Chevrolet Workshop Service and Repair Manuals

Crankshaft Main Bearing: Specifications
Main Bearing Dimension/Clearance Specifications

Crankshaft Journal Diameter 

("0" Stamping) ............................................................................................................................................  47.998-48.000 mm (1.8897-1.8898 inch)
("1" Stamping) ............................................................................................................................................  47.996-47.998 mm (1.8896-1.8897 inch)
("2" Stamping) ............................................................................................................................................  47.994-47.996 mm (1.8895-1.8896 inch)
("3" Stamping) ............................................................................................................................................  47.992-47.994 mm (1.8894-1.8895 inch)
("4" Stamping) ............................................................................................................................................  47.990-47.992 mm (1.8893-1.8894 inch)
("5" Stamping) ............................................................................................................................................  47.988-47.990 mm (1.8892-1.8893 inch)

Main Bearing Cap Bore Diameter 

("0" Stamping) ............................................................................................................................................  52.000-52.003 mm (2.0472-2.0473 inch)
("1" Stamping) ............................................................................................................................................  52.003-52.005 mm (2.0473-2.0474 inch)
("2" Stamping) ............................................................................................................................................  52.005-52.007 mm (2.0474-2.0475 inch)
("3" Stamping) ............................................................................................................................................  52.007-52.010 mm (2.0475-2.0476 inch)
("4" Stamping) ............................................................................................................................................  52.010-52.012 mm (2.0476-2.0477 inch)
("5" Stamping) ............................................................................................................................................  52.012-52.014 mm (2.0477-2.0478 inch)
("6" Stamping) ............................................................................................................................................  52.014-52.016 mm (2.0478-2.0479 inch)

Main Bearing Clearance 

Maximum ...............................................................................................................................................................................  0.035 mm (0.0014 inch)
Standard ..........................................................................................................................................................  0.004-0.020 mm (0.0002-0.0008 inch)

Main Bearing Thickness 

("1" Stamping) ................................................................................................................................................  1.994-1.997 mm (0.0785-0.0786 inch)
("2" Stamping) ................................................................................................................................................  1.997-2.000 mm (0.0786-0.0787 inch)
("3" Stamping) ................................................................................................................................................  2.000-2.003 mm (0.0789-0.0789 inch)
("4" Stamping) ..................................................................................................................................................  2.003-2.006 mm (0.0789-0.0790 inch