Hawks Motorsports proudly offers the BluePrint Engines PSLS37681CTFKB GM LS Compatible 376 C.I. Pro Series Engine, a complete LS performance crate engine package designed for builders who want modern LS reliability, EFI control, and a premium finished engine appearance. Delivering 510 horsepower and 440 lb-ft of torque, this Deluxe Dressed Pro Series engine combines BluePrint’s high-strength LSX-style block, LS3 aluminum cylinder heads, Holley Terminator X Max EFI technology, and a black pulley accessory drive system for a complete performance solution.

The PSLS37681CTFKB features a 376 cubic inch LS-compatible platform built around a BluePrint high-strength cast iron LSX-style block with increased deck strength, priority main oiling, and a 6-bolt main design. The engine is equipped with a hydraulic roller camshaft, hypereutectic pistons, nodular iron crankshaft, and LS3 aluminum cylinder heads to provide strong street performance with excellent durability.

This Deluxe Dressed package includes a Holley Terminator X Max Gen IV EFI system with BluePrint-calibrated ECU, wiring harness, drive-by-wire throttle body, fuel system components, LS3 intake manifold, and swap-ready accessories. The included black pulley kit adds a clean, aggressive engine bay appearance while providing a complete accessory drive package with LS swap compatibility.

The PSLS37681CTFKB is an ideal choice for Camaro, Corvette, Chevelle, C10, Firebird, GTO, G8, restomod, and Pro Touring builds where dependable horsepower and simplified LS swap installation are priorities.

Key Features:

• Part Number: PSLS37681CTFKB
• Manufacturer: BluePrint Engines
• GM LS Compatible Pro Series Engine
• 376 Cubic Inch Displacement
• 510 Horsepower
• 440 lb-ft Torque
• Deluxe Dressed Configuration
• Holley Terminator X Max Gen IV EFI System Included
• BluePrint Calibrated ECU & Harness Included
• Black Pulley Kit Included
• LS3 Aluminum Cylinder Heads
• Hydraulic Roller Camshaft
• Hypereutectic Pistons
• Nodular Iron Crankshaft
• LSX-Style High Strength Cast Iron Block
• 10.7:1 Compression Ratio
• Drive-By-Wire Throttle Body
• LS3 Cast Aluminum Intake Manifold
• Fuel Injectors & Fuel Rails Included
• LS Swap Oil Pan Included
• Water Pump Included
• Coil Packs Included
• Gas Pedal Included
• Harmonic Balancer Included
• Timing Cover Included
• Valve Covers Included
• Designed for Custom LS Swap Applications

Engine Specifications:

General:

• Manufacturer: BluePrint Engines
• Part Number: PSLS37681CTFKB
• Engine Family: GM LS Compatible
• Series: Pro Series
• Configuration: Deluxe Dressed
• Displacement: 376 C.I.
• Horsepower: 510 HP
• Torque: 440 lb-ft
• Compression Ratio: 10.7:1
• Fuel System: Multi-Port Fuel Injection
• ECU: Holley Terminator X Max Gen IV
• 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 Thickness
• Strengthened Main Webbing
• Improved Water Jacket Design
• Extended Cylinder Skirt
• OEM LS3 Front & Rear Cover Compatible
• 1-Piece Rear Main Seal

Rotating Assembly:

• Nodular Iron Crankshaft
• Stroke: 3.622"
• Connecting Rod Length: 6.098"
• 150,000 PSI Rod Bolts
• Hypereutectic Pistons
• Internally Balanced Rotating 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 Terminator X Max ECU
• Complete Wiring Harness
• Drive-By-Wire Throttle Control
• Touchscreen Handheld Controller
• Data Logging Capability
• Laptop Tuning Capability
• BluePrint Engine-Specific Calibration

Benefits:

• Simplified LS swap wiring
• Modern EFI drivability
• Adjustable tuning capability
• Ready for custom performance applications

Accessory Drive:

Black Pulley Kit Included

Includes:

• LS2 Style Water Pump
• 140 Amp Alternator
• Peanut Style A/C Compressor
• Type II Power Steering Pump with Remote Reservoir
• Black Finish Accessory Components

Provides:

• Clean engine bay appearance
• Complete accessory drive system
• LS swap compatibility

Included Components:

Includes:

• Complete Deluxe Dressed Engine Assembly
• LS3 Aluminum Cylinder Heads
• LS3 Cast Aluminum Intake Manifold
• Holley Terminator X Max EFI System
• BluePrint Calibrated ECU
• Wiring Harness
• Drive-By-Wire Throttle Body
• Fuel Injectors
• Fuel Rails
• Black Pulley Kit
• Water Pump
• LS Swap Oil Pan
• Valve Covers
• Coil Packs
• Gas Pedal
• Harmonic Balancer
• Timing Cover

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 Builds
• Pro Touring Vehicles
• LS Swap Applications
• Custom Muscle Cars

Verify transmission compatibility, accessory clearance, hood clearance, fuel system requirements, and exhaust fitment before installation.

Installation Notes:

• Designed for custom LS swap applications.
• Includes BluePrint-calibrated Holley EFI system.
• Do not use standard Holley base calibration in place of the BluePrint calibration.
• Requires non-weighted flexplate/flywheel.
• BluePrint recommends a 2200+ RPM stall converter for automatic transmission applications.
• Verify transmission, driveshaft, and exhaust compatibility.
• Recommended fuel: 91+ octane.
• Professional installation and tuning recommended.