Overview:

BluePrint’s LS-compatible 427 c.i. Builder Series package brings big-cube LS power together with the unmatched driver connection of a T56 6-speed manual. Built for enthusiasts who want full control of every shift, this standard edition setup delivers explosive performance, modern reliability, and crisp throttle response through the Holley Terminator X EFI system. Finished with a natural pulley kit, this combination is ideal for Pro-Touring builds, muscle car restomods, or any project that demands raw horsepower and a true hands-on driving experience.

Description:

• Horsepower & Torque: 585 Horsepower / 520 ft. lbs. Torque
• Compression Ratio: 11:1
• BluePrint Engines LS3 Aluminum Heads
• BluePrint Engines Hydraulic Roller Cam
• BluePrint Engines Forged Crank
• BluePrint Engines Forged Pistons
  

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
• 4.0665" Bore
• 6-Bolt Main
  

Rotating Assembly:

• Forged Crankshaft
• 4.125" Stroke
• Forged 6.125" Connecting Rods
• Forged 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
• .624 Intake / .624 Exhaust Lift
• 239 Intake / 255 Exhaust Duration
• @.050-114 Degree Lobe Separation

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 Cast Aluminum Intake Manifold
• LS Swap Oil Pan - Windage Tray - Pick Up Screen
• BluePrint Engines Fuel Injectors and Rail
  
• 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 T56 Six Speed Transmission Package:

• McLeod Super Steel Pro Dual Disk Clutch
• Steel Bell Housing
• Billet Flywheel
• Engine Guard
• Starter
  • First Gear Ration: 2.66:1
  • Second Gear Ratio: 1.78:1
  • Third Gear Ration: 1.30:1
  • Fourth Gear Ration: 1.00:1
  • Fifth Gear Ration: 0.80:1
  • Sixth Gear Ration: 0.63:1

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.
• 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.