Home / GM COMPATIBLE-LS-427 ci / GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Deluxe Dressed - Polished Pulley Kit - Holley Terminator X EFI System
  • GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Deluxe Dressed - Polished Pulley Kit - Holley Terminator X EFI System
  • GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Deluxe Dressed - Polished Pulley Kit - Holley Terminator X EFI System
  • GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Deluxe Dressed - Polished Pulley Kit - Holley Terminator X EFI System
  • GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Deluxe Dressed - Polished Pulley Kit - Holley Terminator X EFI System
  • GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Deluxe Dressed - Polished Pulley Kit - Holley Terminator X EFI System
  • GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Deluxe Dressed - Polished Pulley Kit - Holley Terminator X EFI System

GM LS Compatible 427 c.i. Pro Series Engine - 605 Horsepower - Deluxe Dressed - Polished Pulley Kit - Holley Terminator X EFI System

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  • Detail

    Overview:

    The LS-compatible platform is the undisputed king of street machines, and this BluePrint Engines 427 C.I. Pro Series LS compatible powerhouse proves exactly why. Built to dominate, this base-dressed beast unleashes a jaw-dropping 605 horsepower and 565 ft-lbs of torque, this base dressed beast packs a 11:1 thanks to a combination of BluePrint aluminum heads, hydraulic roller cam, forged pistons, and a forged crankshaft, all securely anchored in a high-strength LSX-style block. Controlling this build is Holley’s Terminator X EFI system preloaded with a base tuning map tailored for this engine. Real-Time Fuel Map Learning simplifies tuning by dynamically adjusting fuel delivery, while the Bosch LSU 4.9 wideband sensor enables precise AFR monitoring and advanced closed-loop tuning. With eight high-impedance injector drivers, it’s compatible with both stock LS and Holley EFI injectors. An integrated 1-bar MAP sensor supports naturally aspirated or mild nitrous setups, with optional harnessing for higher-bar sensors. Four configurable inputs and two outputs give you control over accessories like electric fans, boost solenoids, or nitrous. Fine-tune via free PC software or on-the-fly with the included 3.5" touchscreen handheld, complete with setup wizard, real-time gauges, and data logging.

    Description: 

    • Horsepower & Torque: 605 Horsepower / 565 FT LBS
    • 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
    • 4.0685" 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

    Ignition Timing:

    • ECM Supplied with Calibration

    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:

    • Front Accessory Drive with LT1 Style 150-amp Alternator, LT1 Style Water Pump, Type II Power Steering Pump with Baffled Edges, and Compact Style A/C Compressor
    • 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

    Notes:

    • Holley terminator X MAX System supports transmission control, but requires additional Transmission harness such as BPP558405
    • This engine requires a non-weighted flex plate/flywheel.
    • Recommended Fuel: 91 Octane
    • 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 a 2200+ RPM stall converter.
    • 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.

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