Hawks Motorsports offers our clients this PS4272CT1 GM Small Block Compatible 427 C.I. Pro Series Engine - 540 Horsepower - Long Block - BluePrint Engines designed for customers seeking a high-performance small block engine foundation with large displacement capability and premium internal components. This BluePrint Engines Pro Series 427 C.I. long block delivers 540 horsepower and 535 ft. lbs. of torque while combining GM Small Block compatible architecture, aluminum cylinder heads, forged rotating assembly components, and a customizable long block configuration for serious street performance, custom builds, and restoration applications.

The PS4272CT1 features a high-strength cast iron block, BluePrint aluminum cylinder heads, hydraulic roller camshaft, forged steel crankshaft, forged pistons, and forged connecting rods. The 427 C.I. platform provides big-displacement performance while maintaining a small block compatible package, giving builders a powerful option for applications requiring increased horsepower and torque without moving to a traditional big block platform.

The Pro Series long block configuration provides the core engine assembly while allowing customers to select their preferred intake manifold, fuel system, ignition components, accessory drive system, exhaust components, and vehicle-specific hardware. This configuration is ideal for builders creating a custom drivetrain combination matched to their vehicle and performance goals.

The PS4272CT1 is designed for high-performance applications and is not intended for pollution-controlled vehicles. 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: PS4272CT1
• BluePrint Engines GM Small Block compatible 427 C.I. Pro Series long block engine
• Rated at 540 horsepower and 535 ft. lbs. torque
• Pro Series high-performance engine configuration
• Long block format for custom builds
• High-strength cast iron block
• BluePrint aluminum cylinder heads
• Hydraulic roller camshaft
• Forged steel crankshaft
• Forged pistons
• Forged connecting rods
• 4.125" bore
• 4.000" stroke
• 6.000" forged connecting rods
• 10.0:1 compression ratio
• 4-bolt main block design
• 1-piece rear main seal
• Internally balanced rotating assembly
• Includes:
  • BluePrint valve covers
  • Dipstick
  • Harmonic balancer
  • Timing cover
  • Oil pan
• Fuel recommendation: 91+ octane
• Designed for street performance, custom builds, and high-performance applications
• Requires additional components for complete installation

Fitment Applications:

GM Small Block Compatible Applications

Designed for custom applications requiring a high-performance GM Small Block compatible 427 C.I. long block engine.

Common applications include:

Chevrolet Camaro

• Classic Chevrolet Camaro performance builds
• Custom Camaro restomod applications

Chevrolet Chevelle

• Chevrolet Chevelle restoration and performance applications

Chevrolet Corvette

• Classic Corvette performance and custom applications

Chevrolet Nova

• Chevrolet Nova street performance builds

Chevrolet C10 / GMC Truck Applications

• Classic Chevrolet and GMC truck performance builds

Custom Street Performance / Restomod Applications

• Custom vehicles requiring a high-output small block engine platform

Verify fitment before ordering, especially when using modified vehicles, aftermarket components, custom engine mounts, transmission combinations, 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, carburetor or EFI system, distributor, ignition components, starter, accessories, wiring, and exhaust components must be selected based on vehicle application.
• Verify fuel system capacity and fuel delivery requirements before installation.
• Confirm flexplate/flywheel requirements based on transmission application.
• Verify transmission compatibility before installation.
• Confirm cooling system capacity and radiator compatibility.
• Raised intake port aluminum cylinder heads may require application-specific intake manifold and clearance verification.
• Verify hood clearance, accessory clearance, and exhaust fitment before final installation.
• Additional installation components may be required depending on vehicle configuration.
• Test fit all components before final installation.