GM LS Compatible 376 c.i. Pro Series Engine and T56 Manual Transmission - 700 Horsepower - Standard Edition Builder Series - Polished Pulley Kit - Holley Terminator X EFI System
GM LS Compatible 376 c.i. Pro Series Engine and T56 Manual Transmission - 700 Horsepower - Standard Edition Builder Series - Polished Pulley Kit - Holley Terminator X EFI System
GM LS Compatible 376 c.i. Pro Series Engine and T56 Manual Transmission - 700 Horsepower - Standard Edition Builder Series - Polished Pulley Kit - Holley Terminator X EFI System
GM LS Compatible 376 c.i. Pro Series Engine and T56 Manual Transmission - 700 Horsepower - Standard Edition Builder Series - Polished Pulley Kit - Holley Terminator X EFI System

GM LS Compatible 376 c.i. Pro Series Engine and T56 Manual Transmission - 700 Horsepower - Standard Edition Builder Series - Polished Pulley Kit - Holley Terminator X EFI System

SKU: BLS3769SCTKBT56

GM LS Compatible 376 c.i. Pro Series Engine and T56 Manual Transmission - 700 Horsepower - Standard Edition Builder Series - Polished Pulley Kit - Holley Terminator X EFI System

SKU: BLS3769SCTKBT56

Horsepower & Torque: 700 Horsepower / 640 ft. lbs. Torque

Cylinder Heads: BluePrint Engines LS3 Aluminum Cylinder Heads

Compression Ratio: 9.5:1

Camshaft: Hydraulic Roller Cam - .612 Intake / .585 Exhaust Lift and 225 Intake / 238 Exhaust Duration @ .050 - 113° LSA Three Bolt Cam

Pistons: Forged

Crankshaft: Forged - 3.622" Stroke and Forged 6.125" Rods

Supercharged: Holley Terminator X Max - Gen IV Complete ECU/Harness EFI System

Fuel Recommendation: 91+ Octane

/
  • Secure payments
  • Financing available at checkout with Affirm

Overview:

The BluePrint Engines GM LS Compatible 376ci is a brute-force blend of engineering precision and raw muscle, delivering an astonishing 700 horsepower and 640 lb-ft of torque. At its core, the Magnuson TVS 2650 Supercharger unleashes relentless boost, while the Holley Terminator X Max Gen IV ECU and harness system orchestrate seamless engine control and tuning flexibility. The high-performance EFI system, complete with precision fuel injectors and rail, ensures consistent delivery under extreme loads. Every supporting component—from the oil pan and coil packs to the spark plugs, wires, water pump, and harmonic balancer—is built to endure high-output stress and maintain peak reliability. Mated to the legendary T56 manual transmission, this setup offers a visceral, hands-on driving experience that matches its ferocity. Topped off with the Holley black front pulley kit, this build isn’t just robust—it’s a symphony of strength, control, and unrelenting performance.

Description:

  • Horsepower & Torque: 700 Horsepower / 640 ft. lbs. Torque
  • Compression Ratio: 9.5:1
  • BluePrint Engines LS3 Aluminum Heads
  • BluePrint Engines Hydraulic Roller Cam
  • BluePrint Engines Forged Pistons
  • BluePrint Engines Forged Crankshaft

Block:

  • BluePrint Engines High Strength 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 Seal
  • Priority Main Oiling
  • 4.0665" Bore
  • 6-Bolt Main

Rotating Assembly:

  • Forged Crankshaft
  • 3.622" Stroke
  • 6.125" Forged Connecting Rods w/ 150,000 PSI Bolts
  • Forged Pistons
  • Internally Balanced Front and Rear

Cylinder Heads:

  • BluePrint Aluminum Cylinder Heads - PS8015
  • 70cc Chamber
  • 2.165" Intake / 1.590" Exhaust Valves
  • 259cc Intake / 102cc Exhaust Runners

Cam Specs:

  • Hydraulic Roller Cam
  • .612 Intake / .585 Exhaust
  • 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:

  • LS Swap Oil Pan - Windage Tray - Pick Up Screen
  • BluePrint Engines Fuel Injectors and Rail
  • DBW Throttle Body - BPP12191019
  • Magnuson TVS 2650 Supercharger
  • Throttle Pedal, and Sensors
  • Spark Plugs & Wires
  • Harmonic Balancer
  • Coil Packs
  • Black Front Accessory Drive:
    • 150-amp Alternator
    • LT3 Style Water Pump
    • Power Steering Pump with Attached Reservoir
    • Compact Style Air Conditioning Compressor

Assembled with Complete T56 Six Speed Manual Transmission Package:

           Includes the following: 

  • McLeod Super Steel Pro Dual Disk Clutch
  • Bell Housing
  • Billet Flywheel
  • Engine Guard
  • Starter
    • First Gear Ration: 2.66:1
    • Second Gear Ratio: 1.78:1
    • Third Gear Ration: 1.30:1
    • Fourth Gear Ration: 1.00:1
    • Fifth Gear Ration: 0.80:1
    • Sixth Gear Ration: 0.63:1

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.
  • BluePrint Engines Recommends Air Intake Kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained with the above ECU / tuning. 
  • The front accessory drive on this engine fits many vehicles, however it is the customer responsibility to accurately measure and confirm fitment.  Note this is a low-profile design, but things such as power steering hoses, alternator wiring, and additional fittings/fabrication may be required on some vehicles.
 

Your BluePrint engine was dyno tested with the parts and specifications listed below.  If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet.

Part Number: BLS3769SCTKBT56

Fuel Delivery Type: Fuel Injection

Spark Plug: NGK 3689 (TR6IX)

Spark Plug Gap: .030"

Harmonic Balancer: Non-weighted

Flexplate/Flywheel: Non-weighted

Stall Converter: 3200+

Intake Manifold: N/A

Fuel Recommendation: 91+ Octane

Timing (Initial/Total Advance): Controlled by Powertrain Control Module

Firing Order: 1,8,7,2,6,5,4,3

Recommended Oil Filter: BPPB160

Recommended Break in Oil: BPP710

Recommended Oil: BPP10W30

Click here to download a copy of the Installation Guide that came with your BluePrint engine.

Header Partners: 
Click here for our Header Partners and recommendations.

BETTER THAN THE REST.

The satisfaction of our customers is our highest priority at BluePrint Engines. We use quality components to balance your engine's rotating assembly within two grams of spec. We dyno test your crate engine and certify that it's ready to deliver horsepower and torque.

We give your BluePrint engine the industry's best-in-class warranty for 30-months / 50,000 miles — with the extra confidence only BluePrint can provide. Our warranty applies to individual or professional installations and is fully transferable.

For a detailed overview of our warranty, click here.

IT ALL COMES DOWN TO RESULTS.

We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer to get our rotating assemblies within two grams, ensuring silky smooth power over the entire RPM range. That's precisely why our engines sound and run better than our competitors.

BRAGGING RIGHTS INCLUDED!

A comprehensive, dyno-generated printout showing these critical specs will accompany your delivered engine. No more guessing or wondering what your installed engine's real-world peak horsepower and torque ratings actually are. Any doubters in the crowd? Simply flash 'em your dyno results!

This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!

RECOMMENDED PRODUCTS:
BluePrint Engines Crate Engine Break-In Oil — 1 Quart
BluePrint Engines 10w30 Engine Oil - 1 Quart
TrueBlue Performance Octane Boost
BluePrint Engines TrueBlue Performance Octane Booster
BluePrint Engines TrueBlue UltraCool Antifreeze Coolant CONCENTRATE
BluePrint Engines TrueBlue Power Steering Fluid
BluePrint Engines TrueBlue Transmission Fluid UNIVERSAL ATF/MTF
Gen IV LS and 2009+ Gen III Hemi Compatible Oil Filter
EFI Billet Aluminum Fuel Pressure Bypass Regulator - 40-75 PSI and -10AN ORB - Black
Liquid Filled Fuel Pressure Gauge - 0-100 PSI
Muscle car swap LS and Hemi Universal Air Intake Kit
EFI Fuel Pump and Plumbing Kit BPP5267 - For Fuel injected engines
BluePrint Engines EFI In-Tank Retrofit Fuel Pump - 450 LPH - Return Style
GM LS Compatible Water Neck – 45°. For 2.25 DIA LS thermostats with 2.45 overall height
BluePrint Parts – GM LS2 Compatible Water Neck – Straight. For 2.25 DIA LS thermostats with 2.45 overall height