530 HP 495 lb-ft 376 c.i. 91+ Octane Dyno Tested 30-Month/50,000-Mile WarrantyBuilt for LS swaps that need a complete, matched engine-management package, this GM LS3-compatible 376 crate engine produces 530 horsepower and 495 lb-ft of torque. It uses a hig
530 HP 495 lb-ft 376 c.i. 91+ Octane Dyno Tested 30-Month/50,000-Mile Warranty
Built for LS swaps that need a complete, matched engine-management package, this GM LS3-compatible 376 crate engine produces 530 horsepower and 495 lb-ft of torque. It uses a high-strength LSX-style cast-iron block, BluePrint aluminum cylinder heads, a hydraulic roller camshaft, a nodular-iron crankshaft, forged connecting rods, and hypereutectic pistons.
This base-dressed engine includes the GM plastic intake manifold, drive-by-wire throttle body, 42 lb/hr fuel injectors, fuel rail, coil packs, spark plugs and wires, water pump, LS swap oil pan, harmonic balancer, throttle pedal, sensors, and a Holley Terminator X Max ECU and wiring harness. The ECU is supplied with a BluePrint calibration matched to the engines 58x crank and 4x cam sensor configuration.
The Holley system adds self-learning fuel control, Bosch LSU 4.9 wideband support, a 3.5" touchscreen handheld, internal data logging, configurable inputs and outputs, and USB/CAN laptop tuning. Transmission control is supported, but a separate transmission harness is required. The accessory drive, starter, flexplate or flywheel, exhaust, cooling system, fuel-delivery system, and vehicle-specific installation components are sold separately.
Need to confirm fitment or get an exact delivered price? Call or text our team before ordering.
Includes:
Note: Flexplate or flywheel, transmission-control harness, starter, front accessory drive, air-intake system, headers and exhaust, external fuel-delivery components, cooling system, transmission, and vehicle-specific installation hardware are NOT included. A non-weighted flexplate or flywheel is required.
Specifications
| Specification | Details |
|---|---|
| Engine Family | GM LS Compatible |
| Manufacturer Part Number | PSLS3763CTF |
| Displacement | 376 Cubic Inches |
| Horsepower | 530 HP |
| Torque | 495 lb-ft |
| Compression Ratio | 10.7:1 |
| Block Material | High-Strength Cast Iron, LSX Style |
| Bore | 4.0662" |
| Stroke | 3.622" |
| Main Caps | 6-Bolt |
| Rear Main Seal | One-Piece |
| Oiling System | Priority Main Oiling |
| Crankshaft | Nodular Iron |
| Connecting Rods | 6.125" Forged Steel |
| Connecting Rod Bolts | 150,000 PSI |
| Pistons | Hypereutectic Flat Top, 2cc |
| Balance | Internal |
| Reluctor Wheel | 58x |
| Cam Sensor | 4x |
| Cylinder Heads | BluePrint Aluminum LS3 Style |
| Combustion Chamber | 69cc |
| Intake Runner Volume | 259cc |
| Exhaust Runner Volume | 102cc |
| Intake Valve | 2.165" |
| Exhaust Valve | 1.590" |
| Camshaft | Hydraulic Roller |
| Cam Lift | .612" Intake / .585" Exhaust |
| Cam Duration @ .050 | 225 Intake / 238 Exhaust |
| Lobe Separation | 113 |
| Fuel Injection | Holley Terminator X Max EFI |
| Throttle Body | Drive-by-Wire |
| Fuel Injectors | 42 lb/hr at 58 PSI |
| Intake Manifold | GM Plastic LS3-Style Intake |
| Fuel Requirement | 91+ Octane |
| Oil Capacity | 6 Quarts |
| Recommended Stall Converter | 2,200 RPM or Higher |
| Firing Order | 1-8-7-2-6-5-4-3 |
| Warranty | 30 Months / 50,000 Miles |
Holley Terminator X Max Features
Fitment Notes
Built by Off-Road People, Supported by Off-Road People
Wide Open Design has more than 20 years of experience building LS-powered rock crawlers, trail rigs, race cars, and custom tube-chassis vehicles. We can help you match the engine with the correct cooling system, fuel delivery, transmission, drivetrain, and installation components for your build.
Tech Insight
The 376 cubic inch LS3 platform has become one of the most popular engine combinations for off-road and performance builders because it delivers an excellent combination of horsepower, torque, compact packaging, reliability, and aftermarket support.
The high-strength cast iron LSX-style block provides increased deck thickness, reinforced webbing, extended cylinder skirts, and a six-bolt main design. These features make it a strong choice for vehicles exposed to severe vibration, repeated shock loads, large tires, heavy drivetrains, and sustained high-RPM operation.
The Holley Terminator X Max system removes much of the guesswork associated with matching an aftermarket EFI system to a crate engine. The ECU, injectors, throttle body, ignition components, sensors, and wiring are supplied as a matched package, and the ECU includes a base calibration developed specifically for this engine combination.
The system also gives builders room to expand. Configurable inputs and outputs can support electric cooling fans, nitrous controls, boost control components, and additional vehicle systems. The Terminator X Max can also control compatible electronic transmissions when the correct transmission harness is installed.
For builders who want a powerful LS engine without sourcing and matching every fuel injection and ignition component individually, this base-dressed package provides a more complete and efficient path to a running vehicle.
Frequently Asked Questions
This package includes the assembled 376 cubic inch engine, aluminum cylinder heads, hydraulic roller camshaft, LS3-style intake manifold, drive-by-wire throttle body and pedal, fuel injectors, fuel rails, ignition coils, spark plugs, plug wires, water pump, LS swap oil pan, harmonic balancer, engine sensors, Holley Terminator X Max ECU, engine wiring harness, and 3.5-inch touchscreen controller.
The ECU includes a base calibration developed by BluePrint Engines for this specific engine combination. The system also features real-time fuel learning and closed-loop air/fuel ratio control.
Vehicle-specific adjustments may still be required based on the fuel system, exhaust, intake routing, transmission, tire size, gearing, and intended use.
BluePrint Engines states that the supplied ECU is already calibrated for this engine. The generic Holley startup calibration should not be used to overwrite the BluePrint calibration.
The long-block engine requires the builder to supply the intake manifold, throttle body, injectors, fuel rails, ignition coils, ECU, wiring harness, sensors, and engine management system.
This base-dressed version includes those components along with a calibrated Holley Terminator X Max EFI system, making it much closer to a complete swap-ready engine package.
This is a base-dressed engine with a complete EFI and ignition management system, but it is not a fully turnkey vehicle installation.
The builder must still supply the accessory drive, starter, battery and charging system, external fuel system, air intake, exhaust, cooling system, engine mounts, transmission components, flexplate or flywheel, and vehicle-specific installation hardware.
Yes. The 376 LS is a popular choice for Jeep swaps, rock crawlers, muscle cars, classic trucks, hot rods, race cars, prerunners, Ultra4 vehicles, and custom off-road builds because of its strong power output, compact design, reliability, and aftermarket support.
Yes. The 495 lb-ft of torque, compact LS platform, cast iron block, and complete EFI system make it a strong option for rock crawlers, trail rigs, buggies, and Ultra4 vehicles.
Proper gearing, cooling capacity, fuel delivery, oil control, and transmission selection are still critical for low-speed off-road use.
This engine is designed for premium gasoline with a minimum recommendation of 91 octane.
The Holley Terminator X Max can control compatible electronic automatic transmissions. A separate transmission-specific wiring harness and proper configuration are required.
No. A flexplate or flywheel is not included. Because the engine is internally balanced, it requires a compatible non-weighted flexplate or flywheel.
No. The engine includes the injectors and fuel rails, but the external fuel pump, regulator, filters, tank, lines, fittings, and plumbing must be supplied separately.
No. The alternator, power steering pump, air-conditioning compressor, brackets, pulleys, tensioner, and belt are not included.
The ECU includes a BluePrint base calibration and self-learning fuel control. Final adjustments may still be needed based on the completed vehicle, exhaust system, intake design, transmission, gearing, and intended use.
