GM LS3 BARE BLOCK

GM LS3 Bare Engine Block

The GM LS3 Bare Engine Block is a genuine GM foundation for building high-performance LS-based engines. Manufactured from high-strength cast aluminium, this bare block provides the strength, accuracy and durability required for performance street, circuit racing and motorsport applications.

Supplied as a bare casting, it allows engine builders to assemble a complete short block using their preferred crankshaft, pistons, connecting rods and internal components. Genuine GM machining ensures precise bore geometry, deck surfaces and main bearing alignment for reliable engine assembly and long service life.

An ideal choice for new engine builds, race engine replacements or performance upgrades where genuine GM quality and fitment are essential.

Specifications

• Genuine GM LS3 Bare Engine Block
• High-Strength Cast Aluminium Construction
• Bare Block Casting
• Precision Machined by General Motors
• Suitable for LS3 Engine Builds
• Ideal for Performance, Motorsport and Engine Rebuild Applications
• Genuine GM Replacement Component
• SKU: GM-LS3-BARE-12673475