GM Service Manual Online
For 1990-2009 cars only

Main Bearing Determining Number

Crankshaft Journal Diameter

Bearing Shells

Metric

English

Block Side

Cap Side

0

67.980-67.988 mm

2.6764-2.6767 in

Brown

Green

67.988-67.996 mm

2.6767-2.6770 in

Brown

Brown

1

67.980-67.988 mm

2.6764-2.6767 in

Green

Green

67.988-67.996 mm

2.6767-2.6770 in

Green

Brown