6.2L LS3 V8 · Cylinder Head

Valve seat width (exhaust)

Specification

Production / metric 1.78 mm
Production / imperial 0.07 in

Measured with Caliper or seat marking compound.

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.