BluePrint Engines 376 c.i. GM LS Compatible Builder Series - Truck Edition - Fuel Injected - 4L65/70E Automatic Transmission - Natural Pulley Kit. (PART #BPE-BLS3768K4X4)

BluePrint Engines brings modern LS efficiency and reliability to the truck world with this truck edition builder series package, paired to a 4WD-ready 4L65/70E automatic transmission. Designed for real-world use, towing, trails, or daily driving. This combo delivers smooth, responsive power and lightweight performance that wakes up any truck build. The Holley Terminator X EFI system keeps everything dialed in with quick starts, clean fueling, and easy tuning, while BluePrint’s precision machining and premium internals ensure long-term durability under load.

Finished with a natural pulley kit for a clean, functional under-hood look, this truck edition package is the perfect turnkey solution for builders who want modern power, 4WD compatibility, and dependable LS performance in their next truck project. 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
• 4.0662" Bore
• 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:

• LS Swap Oil Pan - Windage Tray - Pick Up Screen
• BluePrint Engines Fuel Injectors and Rail
• BluePrint Engine Cast Aluminum Intake
• DBW Throttle Body - BPP12191019
• Throttle Pedal, and Sensors
• Spark Plugs & 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

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

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:

• 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.
• 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.
• 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.