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

This LS engine (PSLS4273CTF) features an LSX-style block with LS3 aluminum heads. It provides 605 horsepower and 565 ft-lbs. of torque for incredible performance! It's also base dressed and comes with a Holley Terminator X Max EFI.

Features and Benefits:
- High-strength cast iron LSX-style base-dressed crate engine block
- 605 Horsepower / 565 FT. LBS. Torque
- Compression Ratio: 11:1
- Features 6-bolt main, 4.0685" bore, and 1-piece rear main seal
- Priority main oiling and improved water jacket design
- Increased deck thickness and strength webbing with extended cylinder skirt
- Forged crankshaft and pistons with 4.125" rotation stroke
- Forged 6.125" connecting rods
- Internally balanced at the front and rear
- Hydraulic roller cam design
- Utilizes OEM LS3 front and rear covers
- Backed by BluePrint Engines' 30-month/50,000-mile warranty

Cylinder Head Specifications:
- 69cc Chambers
- 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 degrees Lobe Separation

Holley Terminator X Max 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

Base Dressed Includes:
- LS Swap Oil Pan - windage tray - pickup screen
- Fuel Injectors and Rail
- DBW Throttle Body
- Water Pump
- Throttle Pedal and Sensors
- GM Plastic Intake Manifold
- Spark Plugs and Wires
- Harmonic Balancer
- Coil Packs

Additional 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.
- 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.