BluePrint Engines Pro Series GM LS 427 C.I. 600HP Base Dressed Crate Engine w/Holley Terminator X EFI System PSLS42751CTF

This BluePrint Engine, configuration is a finely tuned symphony of power and precision, delivering a robust 600 horsepower and 530 ft. lbs. of torque. At its foundation lies BluePrint Engines’ high-strength cast iron LSX-style block, built to handle serious performance demands. Inside, forged pistons and a forged crank ensure durability and strength under high RPMs, while the hydraulic roller cam and LS3 aluminum heads optimize airflow and valve timing for maximum efficiency. With a compression ratio of 11:1, the engine strikes a balance between raw power and responsive throttle. The LS3 fabricated intake manifold and fuel rail system provides a sleek, high-flow path for fuel delivery, complemented by a modern drive-by-wire throttle body for precise control. Managing it all is the Holley Terminator X Max, offering advanced tuning and seamless integration for street or track dominance. This setup isn’t just built to run—it’s built to roar.

Description: 
Horsepower & Torque: 600 Horsepower / 530 ft. lbs. Torque
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
4.0695" 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 Separate
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:
LS3 Fabricated Intake Manifold & Fuel Rail - BPP822112
Drive by Wire Throttle Body - BPP12191019
Retro Fit Oil Pan - BPP81074
Water Pump - BPPLS126WP
Spark Plugs and Wires
Harmonic Balancer
Timing Cover
Valve Covers
Coil Packs
Injectors
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.
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 engine the industry's best-in-class warranty for 30-months / 50,000 miles — with the extra confidence only BluePrint can provide. The warranty applies to individual or professional installations and is fully transferable.

Every BluePrint engine is Dyno tested and has strict parameters to pass and
be shipped to the customer. All parts are tested before being released for production:
• DC and Pneumatic assembly tools calibrated daily
• Fatigue Testing
• Durability Testing
• Random subassembly testing
• Quality system is ISO 9001: 2015 certified
• Traceable engine “DNA” electronic barcode record keeping of
manufacturing and performance data