Hawks Motorsports proudly offers the BluePrint Engines PSLS42751CTF GM LS Compatible 427 C.I. Pro Series Engine, a high-performance LS crate engine designed for enthusiasts looking for big-cubic-inch power, modern EFI technology, and proven street and performance reliability. Producing 600 horsepower and 530 lb-ft of torque, this Base Dressed Pro Series engine combines a 427 cubic inch LS platform, forged internal components, LS3 aluminum cylinder heads, and a Holley Terminator X Max EFI system for a powerful and tunable LS swap solution.

The PSLS42751CTF is built around a BluePrint high-strength LSX-style cast iron block engineered for increased strength with improved deck thickness, reinforced main webbing, priority main oiling, and a 6-bolt main design. The engine features a forged rotating assembly, including forged pistons and a steel crankshaft with a 4.125" stroke, making it an excellent choice for high-performance street cars, Pro Touring builds, and custom LS swaps.

This engine package includes a Holley Terminator X Max Gen IV EFI system with complete ECU and wiring harness, providing modern fuel injection control, simplified installation, and advanced tuning capability. BluePrint Engines calibrates the ECU specifically for this engine combination, providing a ready-to-run EFI solution without the need for a custom startup tune.

The PSLS42751CTF is an ideal choice for Camaro, Corvette, Chevelle, Nova, C10, Firebird, GTO, G8, and other LS swap applications where maximum displacement and reliable horsepower are the goal.

Key Features:

• Part Number: PSLS42751CTF
• Manufacturer: BluePrint Engines
• GM LS Compatible Pro Series Engine
• 427 Cubic Inch Displacement
• 600 Horsepower
• 530 lb-ft Torque
• Base Dressed Configuration
• Holley Terminator X Max Gen IV EFI System Included
• Complete ECU & Wiring Harness Included
• BluePrint Calibrated EFI System
• LS3 Aluminum Cylinder Heads
• LS3 Fabricated Aluminum Intake Manifold Included
• Hydraulic Roller Camshaft
• Forged Pistons
• Steel Crankshaft
• LSX-Style High Strength Cast Iron Block
• 11:1 Compression Ratio
• Drive-By-Wire Throttle Body Included
• Fuel Injectors Included
• Fuel Rails Included
• Coil Packs Included
• LS Swap Oil Pan Included
• Harmonic Balancer Included
• Valve Covers Included
• Timing Cover Included

Engine Specifications:

General:

• Manufacturer: BluePrint Engines
• Part Number: PSLS42751CTF
• Engine Family: GM LS Compatible
• Series: Pro Series
• Configuration: Base Dressed
• Displacement: 427 C.I.
• Horsepower: 600 HP
• Torque: 530 lb-ft
• Compression Ratio: 11:1
• Fuel System: Holley Terminator X Max EFI
• ECU/Harness: Included
• Fuel Recommendation: 91+ Octane

Block Specifications:

• BluePrint High Strength Cast Iron LSX-Style Block
• Bore: 4.0665"
• Stroke: 4.125"
• 6-Bolt Main Design
• Priority Main Oiling System
• Increased Deck Thickness
• Reinforced Main Webbing
• Extended Cylinder Skirt Design
• OEM LS3 Front & Rear Cover Compatible
• 1-Piece Rear Main Seal

Rotating Assembly:

• Steel Crankshaft
• Stroke: 4.125"
• Forged Pistons
• 6.125" Connecting Rods
• Internally Balanced Assembly
• Designed for High Performance Street Applications

Cylinder Heads:

• BluePrint LS3 Aluminum Cylinder Heads
• High-Flow Performance Design
• Designed for Maximum Airflow
• Compatible with LS3-Style Intake Manifolds

Camshaft Specifications:

• Hydraulic Roller Camshaft
• Three-Bolt Cam Design
• Intake Lift: .624"
• Exhaust Lift: .624"
• Duration @ .050:
  • Intake: 239°
  • Exhaust: 255°
• Lobe Separation Angle: 114°

Intake System:

LS3 Fabricated Aluminum Intake Manifold Included

Features:

• BluePrint LS3 Fabricated Intake Manifold
• Integrated Fuel Rail System
• High-flow LS3 intake design
• Ideal for performance LS swap applications

EFI System:

Holley Terminator X Max Gen IV EFI System

Includes:

• Holley Terminator X Max ECU
• Complete Wiring Harness
• Drive-By-Wire Throttle Body
• Fuel Injectors
• Fuel Rails
• EFI Sensors
• Engine Calibration

Benefits:

• Plug-and-play LS swap wiring
• Modern EFI drivability
• Self-learning fuel control
• Advanced tuning capability

Important: BluePrint Engines provides a calibrated ECU for this engine combination. Do not follow standard Holley startup calibration procedures for this pre-programmed engine package.

Included Components:

Includes:

• Complete Base Dressed Engine Assembly
• LSX-Style Cast Iron Block
• LS3 Aluminum Cylinder Heads
• LS3 Fabricated Aluminum Intake Manifold
• Holley Terminator X Max EFI System
• ECU & Wiring Harness
• Fuel Injectors
• Fuel Rails
• Drive-By-Wire Throttle Body
• Coil Packs
• Valve Covers
• Timing Cover
• Harmonic Balancer
• LS Swap Oil Pan
• Spark Plugs & Wires

Fitment Applications:

Compatible with custom GM 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 Builds
• Pro Touring Vehicles
• LS Swap Applications
• Custom Muscle Cars

Always verify transmission compatibility, accessory requirements, fuel system capacity, exhaust clearance, and engine bay dimensions before installation.

Installation Notes:

• Designed for custom LS swap applications.
• Includes Holley Terminator X Max EFI system.
• ECU is pre-calibrated by BluePrint Engines.
• Requires compatible LS transmission setup.
• Requires non-weighted flexplate/flywheel.
• Recommended fuel: 91+ octane.
• Requires compatible accessory drive system (not included).
• Professional installation and tuning recommended.