BluePrint Engines Pro Series LS 427CI 800HP Base Dressed Crate Engine Supercharged PSLS4279SCT

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 800 horsepower and 780 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: 800 Horsepower / 780 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 (LSX Style) Cast Iron 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 Sea
Priority Main Oiling
4.070" 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
70cc Chamber
2.165" Intake / 1.600" 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
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:
Low Profile Rear Sump Oil Pan - BPP81074
All Sensors Required for Engine to Run
DBW Throttle Body - BPP12191019
Magnuson TVS2650 Supercharger
Water Pump - BPPLS126WP
Spark Plugs & Wires
Harmonic Balancer
Timing Cover
Valve Covers
Coil Packs
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.
Not for use in pollution-controlled vehicles.
BluePrint Engines Recommends Air Intake Kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained with the provided ECU / tuning.

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