BluePrint Engines 427 c.i. GM LS Compatible Builder Series - Standard Edition - Fuel Injected - TKX Manual Transmission - Black Pulley Kit. (PART #BPE-BLS4273KBTKX)

BluePrint Engines puts big-inch LS power in your hands, literally. With this 427 c.i. standard edition builder series package paired to a TKX 5-speed manual. Delivering massive torque, sharp throttle response, and the high-rpm excitement LS engines are known for, this combo is built for drivers who want full control and full attitude. The Holley Terminator X EFI system keeps fueling precise and consistent, giving you instant starts, clean power delivery, and easy tuning whether you're carving backroads or hitting weekend events.

Precision machining, premium internals, and BluePrint’s proven durability make this 427 a serious performer, while the black pulley kit adds a clean, purposeful look under the hood. For builders craving modern LS muscle and a manual transmission that begs to be hammered through the gears, this 427/TKX package is the perfect turnkey foundation.

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
• 70cc Chamber
• 2.165" Intake - 1.600" 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
• Throttle Pedal, and Sensors
• GM Plastic Intake Manifold
• Spark Plugs & Wires
• Harmonic Balancer
• Coil Packs
• Black Front Accessory Drive
  • LT1 Style 150-amp Alternator
  • LT1 Style Water Pump
  • Type II Power Steering Pump w/ Reservoir
  • Compact Style Air Conditioning Compressor

Assembled with Complete TKX Five Speed 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