BluePrint Engines Pro Series GM LS 376 C.I. 525HP Deluxe Dressed Crate Engine w/Black Pulley Kit/ Holley Terminator X EFI System PSLS37651CTFKB

This LS3-based engine build is a masterclass in modern performance and reliability, delivering a robust 525 horsepower and 460 ft. lbs. of torque. With a 10.7:1 compression ratio, it’s engineered for high-output efficiency and streetable power. At its heart are BluePrint Engines’ premium components, including LS3 aluminum heads, a hydraulic roller cam, hypereutectic pistons, and a nodular iron crankshaft—each chosen for strength and precision. Fuel and air management are handled by the Holley Terminator X Max system, paired with a fabricated aluminum intake manifold, high-flow injectors, and a matching fuel rail kit. The LS Swap oil pan ensures proper fitment across platforms, while the drive-by-wire throttle body adds cutting-edge responsiveness. Tying it all together is a black pulley kit featuring an LS2-style water pump, a high-output 140-amp alternator, a compact peanut-style A/C compressor, and a Type II power steering pump with remote reservoir—delivering both form and function in a sleek, performance-ready package.

Description:
Horsepower & Torque: 525 Horsepower / 460 ft. lbs. Torque
Compression Ratio: 10.7:1
BluePrint Engines LS3 Aluminum Heads
BluePrint Engines Hydraulic Roller Cam
BluePrint Engines Hypereutectic Pistons
Nodular Iron Crankshaft
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
4.0622" Bore
6-Bolt Main
Rotating Assembly:
Nodular Iron Crankshaft
3.622" Stroke
6.098" Connecting Rods w/ 150,000 PSI Bolts
Hypereutectic Pistons
Internally Balanced Front and Rear
Cylinder Heads:
BluePrint LS3 Aluminum Cylinder Heads - PS8015
69cc Chamber
2.165" Intake / 1.590" Exhaust Valves
259cc Intake / 102cc Exhaust Runners
Cam Specs:
Hydraulic Roller Cam
.612 Intake / .585 Exhaust Lift
225 Intake / 238 Exhaust Duration
@.050-113 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:
LS3 Fabricated Aluminum Intake Manifold - BPP822112
Drive by Wire Throttle Body - BPP12191019
LS Swap Oil Pan - BPP81073
Injectors and Fuel Rail Kit
Spark Plugs and Wires
Harmonic Balancer 
Throttle Pedal
Timing Cover
Valve Covers
Coil Packs
Black Pulley Kit
LS2 Style Water Pump
1- Wire 140amp Alternator
Peanut Style Air Conditioning Compressor
Type II Power Steering Pump with Remote Reservoir
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