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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (Engine Mechanical - 6.6L - Introduction) >> Specifications >> Cylinder Head Gasket Selection Specifications

Cylinder Head Gasket Selection Specifications

WARNING: This page is about a different variant/trim than selected.
Cylinder Head Gasket Selection Specifications

Cylinder Head Gasket Grade Ti max (Piston Projection) Gasket Thickness
Metric (mm) English (in) Metric (mm) English (in)
Grade A (No grade hole on the gasket) Over 0.223 - less than 0.274 Over 0.0088 - less than 0.0108 0.90-1.00 0.0354-0.0394
Grade B (One grade hole on the gasket) Over 0.274 - less than 0.325 Over 0.0108 - less than 0.0128 0.95-1.05 0.0374-0.0413
Grace C (Two grade holes on the gasket) Over 0.325 - less than 0.376 Over 0.0128 - less than 0.0148 1.00-1.10 0.0394-0.0433