Hawks Motorsports proudly offers the BluePrint Engines PSLS37681CTF GM LS Compatible 376 C.I. Pro Series Engine, a complete LS performance crate engine package designed for enthusiasts who want modern LS power with simplified EFI installation. Producing 510 horsepower and 440 lb-ft of torque, this Base Dressed Pro Series engine combines BluePrint’s high-strength LS architecture with a Holley Terminator X Max Gen IV complete ECU and wiring harness system for a powerful, tunable, and swap-friendly performance package.

Built around a BluePrint LSX-style high-strength cast iron block, this engine features reinforced internals, a 6-bolt main design, priority main oiling, and improved block strength for high-performance street and racing applications. The engine is equipped with BluePrint LS3 aluminum cylinder heads, a hydraulic roller camshaft, hypereutectic pistons, and a nodular iron crankshaft for dependable horsepower and long-term durability.

Unlike non-EFI versions, the PSLS37681CTF includes the Holley Terminator X Max Gen IV complete EFI system, providing the ECU, wiring harness, and engine management needed for custom LS swaps and performance builds. This package is ideal for builders looking for a straightforward fuel-injected LS conversion without the hassle of sourcing separate electronics.

With a 10.7:1 compression ratio, 3.622-inch stroke, and aggressive hydraulic roller camshaft, this 376 cubic inch LS engine delivers an excellent balance of street manners, throttle response, and high-performance capability.

Key Features:

• Part Number: PSLS37681CTF
• GM LS Compatible Pro Series Engine
• 376 Cubic Inch Displacement
• 510 Horsepower
• 440 lb-ft Torque
• Base Dressed Configuration
• Holley Terminator X Max Gen IV EFI System Included
• Complete ECU & Wiring Harness Included
• BluePrint LSX-Style High Strength Cast Iron Block
• 6-Bolt Main Design
• Priority Main Oiling System
• Reinforced Main Webbing
• Extended Cylinder Skirt Design
• LS3 Aluminum Cylinder Heads
• Hydraulic Roller Camshaft
• Hypereutectic Flat Top Pistons
• Nodular Iron Crankshaft
• 6.125" Connecting Rods
• Internally Balanced Rotating Assembly
• 10.7:1 Compression Ratio
• 91+ Octane Fuel Recommended
• Multi-Port Fuel Injection
• LS3-Style Intake Configuration
• Fuel Injectors Included
• Fuel Rail Included
• Throttle Body Included
• LS Swap Oil Pan Included
• Water Pump Included
• Harmonic Balancer Included
• Timing Cover Included
• Valve Covers Included
• Coil Packs Included

Engine Specifications:

General:

• Manufacturer: BluePrint Engines
• Part Number: PSLS37681CTF
• Engine Family: GM LS Compatible
• Series: Pro Series
• Configuration: Base Dressed
• Displacement: 376 C.I.
• Horsepower: 510 HP
• Torque: 440 lb-ft
• Compression Ratio: 10.7:1
• 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: 4.0662"
• Main Cap Design: 6-Bolt Main
• Priority Main Oiling System
• Increased Deck Strength
• Reinforced Main Webbing
• Extended Cylinder Skirt
• Improved Water Jacket Design
• 1-Piece Rear Main Seal
• OEM LS3 Front & Rear Cover Compatible

Rotating Assembly:

• Nodular Iron Crankshaft
• Stroke: 3.622"
• Connecting Rod Length: 6.125"
• Hypereutectic Flat Top Pistons
• 2cc Piston Dish
• Internally Balanced Assembly

Cylinder Heads:

• BluePrint LS3 Aluminum Cylinder Heads
• Chamber Size: 69cc
• Intake Valve: 2.165"
• Exhaust Valve: 1.590"
• Intake Runner: 259cc
• Exhaust Runner: 102cc

Camshaft Specifications:

• Hydraulic Roller Camshaft
• Three-Bolt Cam Design
• Intake Lift: .612"
• Exhaust Lift: .585"
• Duration @ .050:
  • Intake: 225°
  • Exhaust: 238°
• Lobe Separation Angle: 113°

EFI System:

Holley Terminator X Max Gen IV EFI System

Includes:

• Holley ECU
• Complete Wiring Harness
• Multi-Port Fuel Injection Control
• Programmable Engine Management
• Custom Tuning Capability

Designed for simplified LS swaps and performance applications requiring modern EFI control.

Included Components:

• LS3 Aluminum Cylinder Heads
• Holley Terminator X Max EFI System
• ECU & Wiring Harness
• Fuel Injectors
• Fuel Rail
• Throttle Body
• LS Swap Oil Pan
• Water Pump
• Harmonic Balancer
• Timing Cover
• Valve Covers
• Coil Packs

Fitment Applications:

Compatible with custom GM LS-powered builds including:

• Chevrolet Camaro
• Chevrolet Corvette
• Chevrolet Chevelle
• Chevrolet Nova
• Chevrolet Impala
• Chevrolet Silverado
• Chevrolet C10
• Pontiac GTO
• Pontiac Firebird
• Pontiac G8
• Chevrolet SS
• Street Rods
• Restomod Builds
• Pro Touring Vehicles
• LS Swap Applications
• Custom Muscle Cars
• Performance Vehicles

Always verify transmission compatibility, accessory clearance, fuel system requirements, and exhaust fitment before installation.

Installation Notes:

• Designed for custom LS swap applications.
• Holley Terminator X Max system requires proper installation and calibration.
• Professional tuning recommended for maximum performance.
• Requires compatible LS transmission setup.
• Requires correct flexplate/flywheel configuration.
• Recommended fuel: 91+ octane.
• Verify oil pan, accessory drive, and exhaust clearance before installation.
• Not intended for emissions-controlled applications unless properly certified.