Bearing Specifications

1989 Chevrolet Hi-Cube 5.7 K, 475/M40SECTION Bearing Specifications
CRANKSHAFT MAIN & CONNECTING ROD BEARINGS SPECS

Application In. (mm)
Crankshaft 
Crankshaft End Play .003-.010 (.10-.25)
Runout N/A
Journal Taper .0002 Max. (.005)
Journal Out-Of-Round .0002 Max. (.005)
Main Bearings
Journal Diameter (1) 2.9495-2.9504 (74.917-74.951)
(2) 2.9493-2.9502 (74.912-75.936)
Oil Clearance (1) .0018-.0033 (.045-.083)
(2) .0022-.0037 (.055-.093)
Connecting Rod Bearings
Journal Diameter 2.3981-2.3991 (60.913-60939)
Oil Clearance .0018-.0039 (.045-.100)
(1) Journals No. 1,2,3,4.
(2) Journal No. 5
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.