BluePrint Engines 376 c.i. GM LS Compatible Builder Series - Standard Edition - Fuel Injected - 4L65/70E Automatic Transmission - Natural Pulley Kit. (PART #BPE-BLS3768K4L7)

BluePrint Engines brings modern LS performance to a turnkey, builder-friendly package built for reliability, throttle response, and clean, efficient power. This 376 cubic-inch setup delivers the crisp acceleration and high-revving character LS engines are known for, backed by precision machining, premium internals, and the durability that defines BluePrint’s Builder Series lineup. Tuned through the Holley Terminator X EFI system, it fires up instantly, stays consistent in any climate, and gives builders the flexibility to dial in their combo with ease.

Whether it’s going into a street cruiser, weekend track car, or a full custom project, offering lightweight LS power with rock-solid drivability and a clean, professional finish. The 2-piece BluePrint low profile intake manifold is perfect for factory or low angle hood designs and works great from 2200-8000 RPM range. The 2-piece design is perfect for periodic clean up or intake manifold porting and is capable of handling up to 600 horsepower.

Blocks:

  • 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

Cylinder Heads:

  • BluePrint Aluminum Cylinder Heads - PS8015
  • 69cc Chamber
  • 2.165" Intake / 1.590" Exhaust Valves
  • 259cc Intake / 102cc Exhaust Runners

Rotating Assembly:

  • 6.098" Connecting Rods w/ 150,000 PSI Bolts
  • Internally Balanced Front and Rear

Included items:

  • BluePrint Engines Fuel Injectors and Rail
  • Low Profile Swap Oil Pan - BPP81073
  • DBW Throttle Body - BPP12191019
  • Throttle Pedal, and Sensors
  • 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
    • Compact Style Air Conditioner Compressor

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.

Notes:

  • Please note, It is not necessary to run the Holley setup wizard, as this will erase the existing calibration loaded by BluePrint Engines. The ecu is fully unlocked and tunable for further adjustments once installed in customer vehicle.
  • 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
  • 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.

SPECIFICATIONS

Horsepower & Torque510 Horsepower / 440 ft. lbs. Torque
Cylinder HeadsBluePrint Engines Aluminum Cylinder Heads
Compression Ratio10.7:1
CamshaftHydraulic Roller Cam - .612 Intake / .585 Exhaust and 225 Intake / 238 Exhaust Duration @ .050 – 113 LSA
PistonsHypereutectic
CrankshaftNodular Iron Crank - 3.622" Stroke and 6.098" Rods
Fuel InjectionHolley Terminator X Max - Gen IV Complete ECU/Harness EFI System
Fuel Recommendation91+ Octane
Ignition TimingECM Supplied with Calibration
Firing Order1,8,7,2,6,5,4,3
Stall Converter2200+ RPM
Intake ManifoldBluePrint Engines Cast Aluminum Intake
Spark PlugChampion 3015 / RS14PMC4
Harmonic BalancerNon-Weighted
Flexplate/FlywheelNon Weighted BPP12654640 - BPPLS1611
Recommended Service OilBPP10W30
Recommended Oil FilterBPPB160
Total Oil Capacity with Production Oil Pan, and Correct Filter6 Quarts