BluePrint Engines 427 c.i. GM LS Compatible Builder Series - Standard Edition - Fuel Injected - TKX Manual Transmission. (PART #BPE-BLS4278TKX)

BluePrint’s LS-compatible 427 c.i. Builder Series package pairs big-inch LS power with the crisp, modern shifting of a TKX 5-speed manual—built for drivers who want strength, control, and street-friendly gearing. This standard edition combo delivers hard-hitting throttle response and rock-solid reliability, topped off with the Holley Terminator X EFI system for precision tuning and instant startup. This an ideal upgrade for Pro-Touring builds, muscle cars, and custom street machines that demand both attitude and functionality.

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 (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

Cylinder Heads:

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

Rotating Assembly:

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

Included items:

• LS Swap Oil Pan - Windage Tray - Pick Up Screen
• BluePrint Engines Fuel Injectors and Rail
• DBW Throttle Body - BPP12191019
• Water Pump - BPPLS126WP
• Throttle Pedal, and Sensors
• Spark Plugs & Wires
• Harmonic Balancer
• Coil Packs

Assembled with Complete TKX Transmission Package:

• Mcleod Super Street Pro Twin Disc Clutch
• Hydraulic Throw Out Bearing
• Bell Housing
• Billet Flywheel
• Starter
  • First Gear Ratio: 2.87:1
  • Second Gear Ratio: 1.89:1
  • Third Gear Ratio: 1.28:1
  • Fourth Gear Ratio: 1.00:1
  • Fifth Gear Ratio: 0.68:1

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.
• 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.
• 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.