BluePrint Engines 427 c.i. GM LS Compatible Builder Series - Standard Edition - Supercharged - 4L80E Automatic Transmission - Black Pulley Kit. (PART #BPE-4279SCTKB4L8)

BluePrint Engines delivers a hard-hitting LS powerhouse with this 830-horsepower 427 Builder Series package, paired perfectly with the proven 4L80E automatic for a turnkey, street-and-strip-ready drivetrain. Holley’s Terminator X EFI system keeps the power crisp and responsive, offering clean starts, smooth tuning, and rock-solid control at any rpm. Built with premium components, tight machining tolerances, and pro-series durability, this LS427 is engineered to take the abuse while delivering relentless modern muscle.

The Black Pulley Kit adds a stealthy, performance-driven finish, making this 427/4L80E combo as sharp under the hood as it is on the pavement.

Blocks:

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

Cylinder Heads:

• BluePrint Aluminum Cylinder Heads - PS8015
• 70cc Chamber
• 2.165" Intake / 1.590" Exhaust Valves
• 259cc Intake / 102cc Exhaust Runners

Rotating Assembly:

• Forged 6.125" Connecting Rods
• Front and Rear Internally Balanced

Included items:

• 2.3L Magnuson TVS Super Charger
• Upgraded Motor tron S107 Injectors
• Electronic Fuel Injection
• Coil Packs
• Valve Covers
• Oil Pan
• Drive by Wire Throttle Body
• Timing Cover
• Spark Plugs and Wires
• Harmonic Balancer
• Black Front Accessory Drive
  • LT1 Style 150-amp Alternator
  • LT1 Style Water Pump
  • Type II Power Steering Pump
  • Compact Style A/C 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.

Assembled with Complete HD 4L80E Transmission Package:

• 4L80E Complete Package
• Electronic Transmission Controller Included
• 3200+ Stall Torque Converter
• Flex Plate
• Starter

4L80E Gear Ratios:

• 1: 2.482
• 2: 1.482
• 3: 1.00
• 4: 0.750
• R: 2.077

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