gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Crankshaft, Engine > < Bearing Undersize Availability
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Crankshaft Main Bearing: Specifications
Main Bearing Dimension/Clearance Specifications

CRANKSHAFT MAIN BEARING CLEARANCE

Production:

# 1 ................................................................................................................................................................................................ 0.0008 - 0.0020 inch
# 2, 3, 4 ........................................................................................................................................................................................ 0.0011 - 0.0023 inch
# 5 ................................................................................................................................................................................................ 0.0017 - 0.0032 inch

Service:

# 1 ................................................................................................................................................................................................ 0.0010 - 0.0015 inch
# 2, 3, 4 ........................................................................................................................................................................................ 0.0010 - 0.0025 inch
# 5 ................................................................................................................................................................................................ 0.0025 - 0.0035 inch

Crankshaft, Engine > < Bearing Undersize Availability