GM LS3 Aluminum Engine Block
Semi-finished 6.2L LS3 aluminum engine block casting for GM Gen IV small block V8 spark-ignition engines. Features priority main oiling and 4.065-inch bore provisions. 8409.91.99 as principal unfinished part for spark-ignition piston engines.
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If machined but not engine-specific
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Import Tips & Compliance
• Bore spacing and main cap girder design diagrams establish LS-series specificity
• Machining allowance specifications distinguish from fully machined blocks (8483)
• Foundry pour card and alloy certification (319 aluminum) required for validation
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