Hawks Motorsports proudly offers the BluePrint Engines BPP12110356 GM LS Compatible Bare Block, a premium-performance engine block engineered for builders seeking a durable, high-strength foundation for custom LS engine builds. Featuring a 9.240-inch standard deck height, 4.000-inch semi-finished bore, SIAM (siamesed) cylinder bores, and ductile cast iron 4-bolt main caps, this block is designed to withstand the demands of naturally aspirated, turbocharged, supercharged, and nitrous-assisted applications.

Manufactured from high-strength EN-GJL-250 cast iron, the BPP12110356 incorporates reinforced bulkheads, thick cylinder walls, and a priority main oiling system to provide exceptional crankshaft stability and lubrication under extreme horsepower conditions. The block supports up to a 4.060-inch finished bore, 4.250-inch stroke, and engine combinations approaching 454 cubic inches, making it an excellent foundation for street performance, Pro Touring, drag racing, off-road, and marine applications.

Each BluePrint Engines bare block is CNC precision machined to ensure accurate deck surfaces, line-honed main bearing bores, and properly machined lifter bores. The block accepts standard LS timing covers, oil pumps, oil pans, rear covers, and valley covers, providing compatibility with a wide range of OEM and aftermarket LS components.

Whether you're assembling a 376, 408, 427, or 454 cubic inch LS combination, the BPP12110356 delivers the strength, reliability, and machining precision expected from BluePrint Engines.

Key Features:

• Part Number: BPP12110356
• GM LS Compatible Bare Engine Block
• High-Strength EN-GJL-250 Cast Iron Construction
• Standard 9.240" Deck Height
• 4.000" Semi-Finished Cylinder Bore
• SIAM (Siamesed) Cylinder Design
• Ductile Cast Iron 4-Bolt Main Caps
• Priority Main Oiling System
• Reinforced Main Webbing
• Thick Deck Surface
• CNC Precision Machined
• Supports Up To 4.060" Finished Bore
• Supports Up To 4.250" Stroke
• Maximum Displacement Approximately 454 Cubic Inches
• Standard LS Camshaft Location
• Accepts Standard LS Oil Pump
• Accepts Standard LS Timing Cover
• Accepts Standard LS Oil Pan
• Accepts Standard LS Valley Cover
• Accepts Standard LS Rear Cover
• Passenger Side Starter Configuration
• Designed for Naturally Aspirated, Turbocharged, Supercharged, and Nitrous Applications
• Manufactured in the USA

Fitment Applications:

Compatible with custom GM LS-based engine builds, including:

• Chevrolet Camaro
• Chevrolet Corvette
• Chevrolet Chevelle
• Chevrolet Nova
• Chevrolet Silverado
• Chevrolet C10
• Chevrolet El Camino
• Chevrolet Caprice
• Pontiac GTO
• Pontiac Firebird
• Pontiac G8
• Chevrolet SS
• Street Rods
• Restomod Builds
• Pro Touring Vehicles
• Drag Racing Applications
• Off-Road Builds
• Marine Applications
• Custom LS Engine Swaps

Always verify rotating assembly, cylinder heads, oil pan, accessory drive, and valvetrain compatibility before final engine assembly.

Installation Notes:

• Semi-finished cylinders require final boring and honing before assembly.
• Professional machining and blueprinting are recommended.
• Compatible with standard LS rotating assemblies and aftermarket performance components.
• Accepts OEM-style LS timing covers, oil pumps, rear covers, oil pans, and valley covers.
• AFM/DOD lifter systems are not supported.
• Verify piston-to-wall clearance, bearing clearances, and rotating assembly dimensions before final assembly.
• Intended for professional engine builders and experienced enthusiasts.