BluePrint Engines Pro Series GM LS 427 Crate Engine Base Dressed 605 HP w/ Holley Terminator X EFI/ Polished Pulley Kit

This engine (PSLS4273CTFK) from BluePrint Engines features a Holley Terminator X ECU and a shiny polished pulley kit for your engine bay. It provides 605 horsepower and 565 ft-lbs. of torque with a dyno-tested LSX style block and LS3 aluminum heads. The self-learning ECU adapts to your engines fuel needs, and it's plug-and-play!

Features and Benefits:
- High-strength cast iron LSX style crate engine block
- 605 Horsepower / 565 Ft. Lbs. Torque
- Compression Ratio: 11:1 (91+ Octane recommended)
- Features 6-bolt main, 4.0685" bore, and 1-piece rear main seal
- Increased deck thickness and strength webbing with priority main oiling
- OEM LS3 front and rear covers with extended cylinder skirt
- Forged crankshaft, forged pistons with 4.125" rotation stroke
- Hydraulic roller cam design and forged 6.125" connecting rods
- Fuel Injection: Holley Terminator X Max - Gen IV Complete ECU/Harness EFI
- Backed by BluePrint Engines' 30-month/50,000-mile warranty

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
- 8 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

Cylinder Head Specifications:
- 69cc Chamber
- 2.165" Intake / 1.590" Exhaust Valves
- 259cc Intake / 102cc Exhaust Runners

Camshaft Specifications:
- 0.624" Intake / 0.624" Exhaust Lift
- 239 Intake / 255 Exhaust Duration
- @ 0.050-114° Lobe Separation

Deluxe Dressed Includes:
- 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
- GM Plastic Intake Manifold
- Spark Plugs & Wires
- Harmonic Balancer
- Coil Packs

Polished Pulley Kit Includes: 
- LS2 style Water Pump
- 1-wire 140-amp Alternator
- Peanut Style A/C Compressor
- Type II Power Steering Pump w/remote reservoir

Please Note:
- 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.
- 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.
- 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.
- The front accessory drive on this engine fits many vehicles, but 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.