GM LS Compatible 376 c.i. Pro Series Engine – 525 Horsepower – Deluxe Dressed – Black Pulley Kit – Holley Terminator X EFI System

SKU: PSLS37651CTFKB Categories: , Brand:

Horsepower & Torque: 525 Horsepower / 460 ft. lbs. Torque

Cylinder Heads: BluePrint Engines LS3 Aluminum Cylinder Heads

Compression Ratio: 10.7:1

Camshaft: Hydraulic Roller Cam – .612 Intake / .585 Exhaust Lift and 225 Intake / 238 Exhaust Duration @ .050 – 113° LSA – Three Bolt Cam

Pistons: Hypereutectic

Crankshaft: Nodular Iron Crank – 3.622″ Stroke and 6.125″ Rods

Fuel Injection: Holley Terminator X Max – Gen IV Complete ECU/Harness EFI System

Fuel Recommendation: 91+ Octane

Ships from Manufacturer This item typically ships within 2-3 Weeks Free Freight Shipping to the Lower 48!

$13,449.00

In Stock

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Description

Description

Overview:

This LS3-based engine build is a masterclass in modern performance and reliability, delivering a robust 525 horsepower and 460 ft. lbs. of torque. With a 10.7:1 compression ratio, it’s engineered for high-output efficiency and streetable power. At its heart are BluePrint Engines’ premium components, including LS3 aluminum heads, a hydraulic roller cam, hypereutectic pistons, and a nodular iron crankshaft—each chosen for strength and precision. Fuel and air management are handled by the Holley Terminator X Max system, paired with a fabricated aluminum intake manifold, high-flow injectors, and a matching fuel rail kit. The LS Swap oil pan ensures proper fitment across platforms, while the drive-by-wire throttle body adds cutting-edge responsiveness. Tying it all together is a black pulley kit featuring an LS2-style water pump, a high-output 140-amp alternator, a compact peanut-style A/C compressor, and a Type II power steering pump with remote reservoir—delivering both form and function in a sleek, performance-ready package.

Description:

  • Horsepower & Torque: 525 Horsepower / 460 ft. lbs. Torque
  • Compression Ratio: 10.7:1
  • BluePrint Engines LS3 Aluminum Heads
  • BluePrint Engines Hydraulic Roller Cam
  • BluePrint Engines Hypereutectic Pistons
  • Nodular Iron Crankshaft

Block:

  • BluePrint Engines High Strength Cast Iron (LSX Style) Block
  • Increased Deck Thickness and Strength Webbing
  • Utilizes OEM LS3 Front and Rear Covers
  • Improved Water Jacket Design
  • Extended Cylinder Skirt
  • 1-Piece Rear Main Seal
  • Priority Main Oiling
  • 4.0622″ Bore
  • 6-Bolt Main

Rotating Assembly:

  • Nodular Iron Crankshaft
  • 3.622″ Stroke
  • 6.098″ Connecting Rods w/ 150,000 PSI Bolts
  • Hypereutectic Pistons
  • Internally Balanced Front and Rear

Cylinder Heads:

  • BluePrint LS3 Aluminum Cylinder Heads – PS8015
  • 69cc Chamber
  • 2.165″ Intake / 1.590″ Exhaust Valves
  • 259cc Intake / 102cc Exhaust Runners

Cam Specs:

  • Hydraulic Roller Cam
  • .612 Intake / .585 Exhaust Lift
  • 225 Intake / 238 Exhaust Duration
  • @.050-113 Degree Lobe Separation

Holley Terminator X Max Specific Features and Benefits:

  • Real Time Fuel Map Learning Simplifies Tuning by Dynamically Adjusting the Base Fuel Rate
  • On Board Bosch LSU 4.9 Wideband Control, Enabling Accurate AFR Readings and Closed Loop Tuning
  • Eight High Impedance Injector Drivers, Ideal for Stock LS Injectors and Holley EFI Injectors
  • Integrated 1-Bar MAP Sensor for Naturally Aspirated or Nitrous Setups, with Harness Support for External Higher Bar Sensors if needed
  • 4 Configurable Inputs (12V, Ground, 5V, Frequency) and 2 Outputs (Ground, PWM) – Ideal for Electric Fans, Boost Control Solenoids, Nitrous Control and more
  • Free PC Tuning Software via USB/CAN Interface for Full Laptop Control and Advance Setup
  • Integrated 3.5″ Touchscreen Handheld with Setup Wizard, Internal Data Logging, and Real Time Gauge Displays
  • Terminator X Max ECU will Include a Base Timing Map Pre-Configured for this engine

Also Includes:

  • LS3 Fabricated Aluminum Intake Manifold – BPP822112
  • Drive by Wire Throttle Body – BPP12191019
  • LS Swap Oil Pan – BPP81073
  • Injectors and Fuel Rail Kit
  • Spark Plugs and Wires
  • Harmonic Balancer 
  • Throttle Pedal
  • Timing Cover
  • Valve Covers
  • Coil Packs
  • Black Pulley Kit
    • LS2 Style Water Pump
    • 1- Wire 140amp Alternator
    • Peanut Style Air Conditioning Compressor
    • Type II Power Steering Pump with Remote Reservoir

Notes:

  • This Holley EFI Equipped engine has a fully calibrated ECU by BluePrint Engines. Please DO NOT follow the Holley EFI manual for the calibration of the ECU.
  • Retro fit oil pan will fit most 1955-1995 GM front engine, RWD, V8 cars.
  • Not for use in pollution-controlled vehicles or in dry sump applications.

 

Weight: 478 lbs

Dimensions: W30" x H27" x L38"

If you don't know what you need, call our technical sales staff at 931-646-4836