Hawks Motorsports offers our clients this BP4003CT1 GM Small Block Compatible 400 C.I. Power Adder Engine - 511 Horsepower - Long Block - BluePrint Engines designed for customers building a high-performance small block combination with increased displacement and power-adder capability. This BluePrint Engines 400 C.I. Power Adder long block provides a strong engine foundation for custom turbocharger, supercharger, nitrous, and high-performance street applications while maintaining GM Small Block compatibility.

The BP4003CT1 delivers 511 horsepower and 501 ft. lbs. of torque and is designed with performance-oriented internal components to support demanding applications. The 400 C.I. platform provides increased displacement compared with traditional small block combinations, offering improved torque production and a strong foundation for custom performance builds.

This long block configuration includes the assembled engine foundation while allowing builders to select their preferred intake manifold, fuel system, ignition components, accessory drive, exhaust system, forced induction components, and vehicle-specific hardware. This flexibility allows the final engine combination to be tailored to the intended vehicle application and performance goals.

The Power Adder engine design is intended for customers seeking a foundation capable of supporting additional horsepower through properly matched supporting components and tuning. Final power output will vary depending on cylinder heads, induction system, fuel delivery, boost level, camshaft configuration, and calibration.

Vehicle-specific components including engine mounts, transmission compatibility, fuel system requirements, cooling system capacity, exhaust configuration, and accessory clearance must be verified before installation.

Key Features:

• SKU: BP4003CT1
• BluePrint Engines GM Small Block compatible 400 C.I. Power Adder long block engine
• Rated at 511 horsepower and 501 ft. lbs. torque
• Designed for high-performance and power-adder applications
• Long block configuration for custom engine builds
• GM Small Block compatible architecture
• 400 C.I. displacement
• Aluminum cylinder heads
• Hydraulic roller camshaft
• Forged pistons
• Forged steel crankshaft
• Forged connecting rods
• 4-bolt main block design
• 1-piece rear main seal
• Increased displacement for improved torque potential
• Designed for turbocharger, supercharger, nitrous, and performance applications
• Allows custom selection of intake, fuel, ignition, and accessory components
• Designed for street performance, restomod, and custom applications
• Requires additional components for complete installation

Fitment Applications:

GM Small Block Compatible Applications

Designed for custom applications requiring a high-performance 400 C.I. Power Adder engine platform.

Common applications include:

Chevrolet Camaro

• Classic Camaro performance builds
• Camaro restomod applications
• Custom forced induction builds

Chevrolet Corvette

• Custom Corvette performance applications
• High-output engine conversion projects

Chevrolet Chevelle

• Chevelle street performance builds
• Custom engine upgrade applications

Chevrolet Nova

• Nova restoration and performance builds

Chevrolet C10 / GMC Truck Applications

• Classic truck performance builds
• Custom high-torque truck applications

Custom Street Performance / Restomod Applications

• Vehicles requiring a customizable GM Small Block compatible 400 C.I. performance engine foundation

Verify fitment before ordering, especially when using modified vehicles, aftermarket components, custom engine mounts, forced induction systems, custom tuning, or non-original applications.

Installation Notes:

• Verify engine compatibility with vehicle chassis, engine mounts, transmission, accessory drive system, cooling system, and exhaust configuration before installation.
• This is a long block engine configuration; additional components are required to complete installation.
• Intake manifold, fuel system components, ignition components, starter, accessories, and exhaust components must be selected based on vehicle requirements unless specifically included.
• Forced induction components are not included unless specifically stated.
• Verify cylinder head and intake compatibility before installation.
• Confirm compression ratio compatibility with intended boost level and fuel type.
• Verify fuel system capacity and fuel delivery requirements.
• Confirm engine management and tuning requirements for EFI applications.
• Verify flexplate/flywheel requirements based on transmission application.
• Confirm transmission compatibility before installation.
• Verify cooling system capacity and radiator requirements.
• Additional installation components may be required depending on vehicle configuration.