6.2L LS3 V8 · Crankshaft

Main bearing journal diameter

Specification

Production / metric 64.992 – 65.008 mm
Production / imperial 2.558 – 2.559 in

Measured with Outside micrometer.

Limits & variants

Service limit (used parts) 64.992 mm 2.558 in

Sources

  • GM Service Information: Engine Mechanical Specifications (6.2L LS3), Document ID 2055077Captured 2026-05-28

Values are cited as facts. We do not reproduce the manufacturer's prose, table layout, or diagrams.