BluePrint Engines Pro Series LS GM 427 Crate Engine Base Dressed 800 HP w/ Terminator X Max EFI

Grab a powerhouse that’s LS compatible via BluePrint Engines! From unleashing 800 horsepower to 780 ft.-lbs. of torque, their LS GM 427 C.I. crate engine (PSLS4279SCT) is a potent assembly. It’s built around an LSX-style block made of cast iron with a forged rotating assembly. That primes it for serious load and heat without giving up stability. Because it’s base dressed, you also get key components like a throttle body and valve covers. As a bonus, it includes a Magnuson TVS2650 supercharger.

Crate Engine Features and Benefits:
- LXS-style, high-strength, cast iron engine block with 4.070” bore
- Operates at 800 horsepower and 780 ft.-lbs. torque
- 11.0:1 compression ratio for aggressive throttle response
- Fuel recommendation: 91+ octane
- Increased deck thickness and strength webbing
- 6-bolt main offers stronger bottom end for high-HP applications
- 1-piece rear main seal ensures stronger, leak-free security
- Improved water jacket design for better flow efficiency and temperature control
- Priority main oiling for more stable oil pressure
- Extended cylinder skirt improves piston stability for stronger high-load durability
- Block uses OEM LS3 front and rear covers
- Built-in BluePrint Engines LS3 cylinder heads made of aluminum
- Forged crankshaft with 4.125" stroke and forged 6.125" connecting rods
- Forged pistons for incredible strength and impact resistance
- Rotating assembly is internally balanced for smoother, more stable operation
- Hydraulic roller cam. for lower maintenance and better strength than flat tappet cam.
- Backed by BluePrint Engines' 30-month/50,000-mile warranty

Along with the crate engine, you also get a Terminator X Max EFI system from Holley. Real-time fuel learning and wideband AFR feedback help it stay dialed in. Meanwhile, the touchscreen handheld gives you quick access to setup, live data, and logging. Plus, it supports common add-ons like electric fans and boost control. Meaning, the system is ready to grow as your build does without needing a rework.

Terminator X Max Features and Benefits:
- Real-time fuel map learning dynamically adjustable base fuel rate
- Offers onboard Bosch LSU 4.9 wideband control
- Enables accurate AFR readings and closed loop tuning
- Eight high impedance injector drivers
- Drivers are ideal for stock LS injectors and Holley EFI injectors
- Integrated one-bar MAP sensor for naturally aspirated and nitrous setups
- Includes harness support for external higher bar sensors if needed
- Four configurable inputs: 12V, ground, 5V, and frequency
- Two configurable outputs: ground and PWM
- Ideal for electric fans, boost control solenoids, nitrous control, and more
- Free PC tuning software accessible via USB/CAN interface
- USB/CAN interface also allows full laptop control and advance setup
- Integrated 3.5” touchscreen handheld with setup wizard
- Designed with internal data logging and real-time gauge displays
- Complete with base timing map pre-configured for this engine

Also Includes:
- Magnuson TVS2650 supercharger
- Drive-by-wire throttle body
- Valve covers
- Low-profile rear sump oil pan
- Timing cover
- Harmonic balancer
- Coil packs
- Spark plugs and wires
- Water pump
- All sensors required for engine to run

Cylinder Head Specifications:
- 70cc chambers
- 2.165" intake / 1.600" exhaust valves
- 259cc intake / 102cc exhaust runners

Camshaft Specifications:
- .624” intake / .624” exhaust lift
- 239 degrees intake / 255 degrees exhaust duration
- @ .050-114 degrees lobe separation

Additional Notes:
- Not for use in pollution-controlled vehicles.
- 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.
- BluePrint Engines recommends using their air intake kit sold under part number BPPLS01013 to ensure correct MAF calculations and dyno calibration are maintained with the provided ECU and tuning.