SKU: BLS37684X4
BluePrint Engines GM LS Compatible 376 c.i. Engine and 4L65/70E Automatic Transmission 4WD Ready - Truck Edition Builder Series - Holley Terminator X EFI System
$19,949.00
376 c.i. 530 Horsepower Builder Series

Horsepower & Torque: 510 Horsepower / 440 ft. lbs. Torque

Cylinder Heads: BluePrint Engines Aluminum Cylinder Heads

Compression Ratio: 10.7:1

Camshaft: Hydraulic Roller Cam - .553 Intake / .553 Exhaust Lift and 218 Intake / 224 Exhaust Duration @ .050 – 113° LSA

Pistons: Hypereutectic

Crankshaft: Nodular Iron – 3.622" Stroke and 6.098" Rods

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

Fuel Recommendation: 91+ Octane

Does NOT come with a Front Accessory Drive

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Financing available at checkout with Affirm

Overview:

BluePrint Engines takes modern LS performance off-road with the Truck Edition Builder Series 376 c.i. engine paired to a 4WD-ready 4L65/70E automatic transmission. Delivering crisp throttle response, lightweight power, and rock-solid reliability, this combo is engineered for trucks that work hard, play harder, and demand modern drivability. The Holley Terminator X EFI system keeps fueling and spark dialed for instant starts, smooth power delivery, and easy tuning whether you're towing, trail riding, or daily driving. Built with premium internals, precision machining, and the durability BluePrint is known for, this 376 Truck Edition package offers a perfect blend of LS efficiency, responsive power, and turnkey 4WD readiness for any truck project.

Description:

  • Horsepower & Torque: 510 Horsepower / 440 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 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
  • 69cc Chamber
  • 2.165" Intake / 1.590" Exhaust Valves
  • 259cc Intake / 102cc Exhaust Runners

Cam Specs:

  • Hydraulic Roller Cam
  • .553 Intake / .553 Exhaust Lift
  • 218 Intake / 224 Exhaust Duration
  • @.050-113 Degree Lobe Separation, 110 ICL

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
  • BluePrint Engine Cast Aluminum Intake
  • Low Profile Swap Oil Pan - BPP81073
  • DBW Throttle Body - BPP12191019
  • Water Pump - BPPLS126WP
  • Spark Plugs and Wires
  • Harmonic Balancer  
  • Coil Packs   

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

  • 4L65/70E Complete Package
  • 4wd Ready Case with 27 Spline 4WD Output Shaft
  • Electronic Transmission Controller Included
  • 2200-2400 Stall Torque Converter
  • Flex Plate
  • Starter
  • Does NOT Include Transfer Case* Uses Common 4L60/70, 6 Bolt Transfer Case Mounting

Notes:

  • BluePrint Engines Recommends Air Intake Kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained with the above ECU / tuning. 
  • Ideal for 1/2 ton, 4WD pickups with 3:90 or numerically higher rear gears, and 33-inch tires, and light towing.  
  • 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.
  • This is NOT intended for heavy duty application or heavy towing.
  • Engine/Trans Package Ships assembled
  • The front accessory drive on this engine fits many vehicles, however it is the customer responsibility to accurately measure and confirm fitment. Note this is a low-profile design, but things such as power steering hoses, alternator wiring, and additional fittings/fabrication may be required on some vehicles.

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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