Hawks Motorsports proudly offers the BluePrint Motorsports BPMS427LS GM LS Compatible 427 C.I. Pro Series Naturally Aspirated Long Block, a competition-focused LS performance engine designed for racers and enthusiasts demanding maximum naturally aspirated power potential. Built by BluePrint Motorsports, this 427 cubic inch Pro Series long block combines premium aftermarket LS architecture with high-performance components engineered for demanding street, track, and racing applications.

Featuring a high-strength LS-compatible block, LS3-style aluminum cylinder heads, forged rotating assembly, and aggressive naturally aspirated configuration, the BPMS427LS delivers the durability and airflow needed for high horsepower applications. The long block design allows builders to customize their intake system, fuel delivery, ignition, accessories, and engine management solution to match their specific build goals.

The BPMS427LS is designed for custom LS swap applications, race vehicles, and high-performance street builds where maximum flexibility and naturally aspirated performance are desired. This engine provides an excellent foundation for builders looking to create a tailored LS-powered combination with their choice of EFI system, carburetion, accessories, and tuning strategy.

Key Features:

• Part Number: BPMS427LS
• Manufacturer: BluePrint Motorsports / BluePrint Engines
• GM LS Compatible Pro Series Engine
• 427 Cubic Inch Displacement
• Naturally Aspirated Performance Configuration
• Long Block Assembly
• High Strength LS-Compatible Block
• LS3 Aluminum Cylinder Heads
• Forged Rotating Assembly
• Forged Steel Crankshaft
• Forged Connecting Rods
• Performance Pistons
• Hydraulic Roller Camshaft
• High Performance Valve Train
• Designed for Maximum Naturally Aspirated Power
• Custom Intake & EFI Ready
• Custom Tuning Required
• Ideal for Racing, Restomod & Pro Touring Applications

Engine Specifications:

General:

• Manufacturer: BluePrint Motorsports
• Part Number: BPMS427LS
• Engine Family: GM LS Compatible
• Series: Pro Series
• Configuration: Long Block
• Displacement: 427 C.I.
• Aspiration: Naturally Aspirated
• Fuel System: Builder Supplied
• ECU/Harness: Not Included
• Intake System: Not Included
• Exhaust System: Not Included

Block Specifications:

• LS-Compatible High Strength Engine Block
• Reinforced Main Webbing
• High Performance Main Cap Design
• Priority Main Oiling System
• Increased Deck Strength
• Improved Cylinder Support
• Extended Cylinder Skirt Design
• 1-Piece Rear Main Seal
• LS3 Front Cover Compatibility

Rotating Assembly:

• Forged Steel Crankshaft
• Forged Connecting Rods
• Performance Pistons
• Internally Balanced Rotating Assembly
• High Strength Rod Fasteners
• Designed for High RPM Naturally Aspirated Operation

Cylinder Heads:

• BluePrint LS3-Style Aluminum Cylinder Heads
• High Flow Intake & Exhaust Ports
• Performance Valve Configuration
• Designed for Increased Airflow
• Compatible with LS Performance Intake Systems

Camshaft & Valve Train:

• Hydraulic Roller Camshaft
• Performance Naturally Aspirated Cam Profile
• High Lift Performance Valve Train
• Designed for Strong Midrange and High RPM Power

Included Components:

Includes:

• Complete Long Block Assembly
• Cylinder Heads
• Camshaft
• Lifters
• Timing Components
• Rocker Arms
• Rotating Assembly
• Oil Pump

Does not include:

• Intake Manifold
• Throttle Body
• Fuel System
• ECU
• Wiring Harness
• Accessories
• Exhaust Components
• Starter
• Alternator

Fitment Applications:

Compatible with custom LS-powered builds including:

• Chevrolet Camaro
• Chevrolet Corvette
• Chevrolet Chevelle
• Chevrolet Nova
• Chevrolet C10
• Chevrolet Silverado
• Pontiac Firebird
• Pontiac GTO
• Pontiac G8
• Chevrolet SS
• Street Rods
• Restomod Vehicles
• Pro Touring Builds
• Drag Racing Applications
• Road Racing Applications
• Custom LS Swap Projects

Verify vehicle compatibility, accessory requirements, oil pan clearance, ECU requirements, and drivetrain compatibility before installation.

Installation Notes:

• Long block requires completion with customer-selected intake, fuel system, ECU, accessories, and exhaust.
• Professional engine assembly inspection and installation recommended.
• Requires compatible LS transmission and flexplate/flywheel setup.
• Custom tuning required.
• Verify compression ratio, camshaft requirements, and fuel system compatibility for intended application.
• Designed for high-performance applications and is not intended as a direct factory replacement engine.