LQ9 engine for sale for classic muscle cars, heavy-duty trucks, restomods, and custom V8 swap projects. This GM LQ9 6.0L high-output iron-block V8 combines 364 cubic inches of displacement with factory-rated output of 345 horsepower and 380 lb-ft of torque. The package also includes a pre-calibrated ECU, a standalone wiring harness, and a 1-year warranty, helping simplify your engine swap planning.
GM LQ9 6.0L V8 Engine Performance
Originally used in select GM SUVs and performance trucks, the LQ9 is part of the Gen III LS-based V8 engine family. Its 6.0L displacement and iron-block construction make it a candidate for compatible muscle car builds, truck projects, and restomods.
The engine is factory-rated at 345 HP at 5,200 RPM and 380 lb-ft of torque at 4,000 RPM. High-compression flat-top pistons support its performance-oriented design, while the cast-iron block provides a solid foundation for a range of compatible applications.
LQ9 Crate Engine Specifications
- Engine: GM LQ9 6.0L V8
- Displacement: 6.0L / 364 cubic inches
- Factory-rated horsepower: 345 HP at 5,200 RPM
- Factory-rated torque: 380 lb-ft at 4,000 RPM
- Bore: 4.000 inches
- Stroke: 3.622 inches
- Block: Cast iron
- Crankshaft: Nodular iron
- Pistons: Flat-top design
- Cylinder heads: Aluminum cathedral-port
- Engine generation: Gen III LS-based V8
- Included electronics: Pre-calibrated ECU and standalone wiring harness
- Warranty: 1 year, subject to the supplied warranty terms
LQ9 Engine Package with ECU and Wiring Harness
This LQ9 engine package includes a pre-calibrated ECU and a simplified standalone wiring harness. These components can help streamline electronic integration when installing the engine in a compatible custom chassis or older vehicle.
Before installation, confirm that the ECU calibration and wiring harness match the engine configuration and intended vehicle. You should also check transmission compatibility, engine mounts, oil pan clearance, fuel delivery, cooling, and exhaust requirements. These details can affect both installation time and the total swap cost.
Is the GM LQ9 6.0L Engine Right for Your Build?
The LQ9 6.0L V8 is worth considering for compatible muscle cars, performance trucks, and restomod projects that need a GM LS-based engine. Its iron-block construction and factory-rated output make it a practical platform to evaluate for street-oriented builds.
If you’re comparing an LQ9 crate engine with other 6.0L V8 options, look beyond horsepower alone. Engine condition, internal components, electronics, included accessories, and warranty coverage all matter. Also, do not assume the engine is suitable for boosted or sustained high-RPM use without verifying its exact configuration and supporting modifications.
What to Check Before Ordering
- Verify the engine’s condition and the exact components included.
- Confirm ECU and wiring harness compatibility with your vehicle.
- Check transmission, mounting, and accessory requirements.
- Review the 1-year warranty’s coverage, exclusions, and conditions.
- Confirm whether additional installation parts are required.
Choose this GM LQ9 6.0L crate engine package by matching its verified specifications and included electronics to your project. Careful fitment checks before ordering can help reduce unexpected costs and make your engine swap easier to plan.
