6.2L LS3 V8 · Piston
Piston-to-bore clearance
Specification
Production / metric -0.048 – 0.001 mm
Production / imperial -0.0019 – 0 in
Measured with Computed (bore minus piston), or feeler gauge.
Limits & variants
Service limit (used parts) 0.055 mm 0.0022 in
Notes
Production piston-to-bore clearance is -0.048 to +0.001 mm (-0.0019 to +0.000 in); the coated piston skirt is a slight interference fit when new, so the lower bound is negative. Service limit is 0.055 mm (0.0022 in) once the skirt coating wears off (see variant). Captured 2026-06-03 from GM SI doc 2055077, Engine Mechanical Specifications (6.2L LS3), 2012 Corvette VIN Y; supersedes an earlier partial capture that recorded only the +0.001 mm / 0 in upper bound.
Sources
- GM Service Information: Engine Mechanical Specifications (6.2L LS3), Document ID 2055077
Values are cited as facts. We do not reproduce the manufacturer's prose, table layout, or diagrams.