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Home >> Chevrolet >> 2013 >> Tahoe LS, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (Engine Mechanical - Hybrid (LZ1) - Description And Operation) >> Description and Operation >> Engine Component Description >> Cylinder Heads

Cylinder Heads

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The cylinder heads are cast aluminum and have pressed in place powdered metal valve guides and valve seats. Passages for the engine coolant air bleed system are at the front of each cylinder head. The valve rocker arm covers are retained to the cylinder heads by 4 center mounted rocker arm cover bolts. High-flow cylinder heads with modified intake and exhaust ports are used to increase flow.

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