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SKU: BLS3763K4L7
BluePrint Engines GM LS Compatible 376 c.i. Engine and 4L65/70E Automatic Transmission - 530 Horsepower - Standard Edition Builder Series - Natural Pulley Kit - Holley Terminator X EFI System
$22,699.00
376 c.i. 530 Horsepower Builder Series

Horsepower & Torque: 530 Horsepower / 495 ft. lbs. Torque

Cylinder Heads: BluePrint Engines Aluminum Cylinder Heads

Compression Ratio: 10.7:1

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

Pistons: Hypereutectic

Crankshaft: Nodular Iron Crank - 3.622" Stroke and 6.098" Rods

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

Fuel Recommendation: 91+ Octane

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Overview:

BluePrint Engines brings lightweight LS performance to a ready-to-run package with this 376 c.i. Builder Series engine paired to a 4L65/70E automatic transmission. With 530 horsepower on tap, this combo delivers sharp throttle response, smooth drivability, and the rock-solid reliability LS fans expect, thanks to the Holley Terminator X EFI system handling fuel and spark with precision. Premium internals, meticulous machining, and BluePrint’s proven durability ensure the engine can take the heat, while the natural pulley kit adds a clean, functional, performance-focused look under the hood. For builders wanting a modern, responsive LS drivetrain that’s turnkey and versatile, this 376/4L65-70E package hits the sweet spot.

Description:

  • Horsepower & Torque: 530 Horsepower / 495 ft. lbs. Torque
  • Compression Ratio: 10.7:1
  • BluePrint Engines 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
  • 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 Aluminum Cylinder Heads - PS8015
  • 72cc Chamber
  • 2.165" Intake -1.600" 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 110 ICL

Ignition Timing:

  • ECM Supplied with Calibration

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:

  • BluePrint Engines Fuel Injectors and Rail
  • Low Profile Swap Oil Pan - BPP81073
  • DBW Throttle Body - BPP12191019
  • Throttle Pedal, and Sensors
  • Loaded Intake Manifold
  • Spark Plugs and Wires
  • Harmonic Balancer  
  • Coil Packs
  • Natural Front Accessory Drive
    • LT1 Style 150-amp Alternator
    • LT1 Style Water Pump
    • Type II Power Steering Pump w/ Reservoir
    • Compact Style Air Conditioning Compressor

Assembled with Complete 4l65/70e 4 Speed Automatic Transmission Package:

  • 4L65/70E Complete Package
    • (1996-2008 13-Pin Harness)
  • Electronic Transmission Controller Included
  • 2200-2400 Stall Torque Converter
  • Flex Plate
  • Starter
    • First Gear Ratio: 3.059:1
    • Second Gear Ratio: 1.625:1
    • Third Gear Ratio: 1.000:1
    • Fourth Gear Ratio: 0.696:1

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.
  • BluePrint Engines Recommends Air Intake Kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained with the above ECU / tuning. 
  • Engine/Trans Package Ships assembled.

WARNING: Cancer and Reproductive Harm
Bragging Rights Included.

EVERY BLUEPRINT ENGINE ACES THE DYNO TEST

We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer in our in-house dyno testing rooms to get our rotating assemblies within two grams, ensuring silky smooth power over the entire RPM range. That’s precisely why our engines sound and run better than our competitors.

All specs, zero speculation: A comprehensive, dyno-generated printout showing your critical engine specs will accompany your delivered engine — every time. No more guessing or wondering what your installed engine’s real-world peak horsepower and torque ratings actually are. Any doubters in the crowd? Simply flash ‘em your exact engine’s dyno results.

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