The GM LS6 is one of the most celebrated naturally aspirated V8 engines in American performance car history — the 5.7L LS-family V8 that launched the C5 Corvette Z06 into a performance category that no domestic competitor could reach at any price. This used GM LS6 engine is a genuine OEM unit sourced from low-mileage Corvette Z06 and Cadillac CTS-V donor vehicles and inspected before shipment. If you need the real LS6 — not an LS1 with revised specs, but the genuine factory hot-rod V8 — this is the engine.
Features
Tested Engine with Warranty
Hassle-Free Returns Available
Live Customer Support
Direct Fit for Your Vehicle
Description
The LS6 motor is a legendary small-block V8 engine known for its high-output performance and reliability. Originally launched in the early 2000s, the LS6 was based on the Gen III architecture but featured significant upgrades over the LS1. This engine boasts a 5.7L displacement, delivering up to 405 horsepower and 400 lb-ft of torque, making it a top choice for enthusiasts seeking a factory-tuned, race-capable motor.
Built for speed and durability, the LS6 was found in the Chevrolet Corvette Z06 (2001–2004) and Cadillac CTS-V (2004–2005). It features enhancements such as a higher-lift camshaft, improved cylinder heads, and a revised intake manifold.
LS6 fitment requires matching your specific application — C5 Corvette Z06 versus Cadillac CTS-V — as the two applications use different oil pan designs and accessory configurations. The LS6 also requires an LS-compatible transmission interface and the correct engine management harness. Our application review process confirms the exact LS6 variant for your specific vehicle or build before it ships.
When searching for the right engine for a Corvette Z06, CTS-V restoration, or a performance build that demands factory authenticity, the choice between a used engine, a remanufactured engine, and an OEM engine matters. A used GM LS6 engine gives you the original factory V8 assembly — the exact CNC-ported heads, the factory camshaft, the factory compression — as an OEM engine that no remanufactured engine alternative can authentically replicate. Choosing a used LS6 means choosing the actual engine GM built, not a rebuilt approximation.
Every used GM LS6 engine ships with up to a 90-day warranty and arrives within 2 to 5 business days. Installation is not included. We recommend a qualified LS specialist for this application. These are genuine GM OEM engines, and we stand behind every unit.
Specifications
Product Type
Engine
Displacement (Engine Size)
5.7L V8
Fuel Type
Gasoline
Availability
In Stock
Shipping
Nationwide Available
Use Case
Ideal for upgrades or replacements
Frequently Asked Questions
What vehicles is the LS6 Motor compatible with?
The LS6 motor is primarily compatible with 2001–2004 Corvette Z06 models and 2004–2005 Cadillac CTS-V. It’s also a popular choice for LS swaps in older muscle cars and custom builds.
Is this a new LS6 crate motor or a used unit?
We offer both used and remanufactured LS6 crate motors for sale, tested and backed with a limited warranty for your peace of mind.
What’s the warranty on an LS6 engine purchased from All American Motors Hub?
Every LS6 motor comes with a standard limited warranty. Warranty length and coverage details depend on engine condition (used or reman)
Can I use the LS6 motor for performance racing builds?
Absolutely. The LS6 motor is a popular platform for track cars, autocross, and high-horsepower street builds thanks to its strong internals and aftermarket support.
Do you ship LS6 engines nationwide?
Yes, All American Motors Hub ships LS6 motors across the USA with fast delivery and secure packaging. Local pickup may also be available.
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Shipping Policy
Our shipping policy is flexible, as the shipping charges depend on the location. A few certain remote regions like CO, UT, NY, OR, & CA may have additional shipping charges or delivery fees. However, some circumstances may cause delays, but we always strive to deliver your order as quickly as possible.
Please note that all shipping times are estimates and not guaranteed. We examine all rebuilt and used engines before shipment and aim to provide high-quality used engines and transmissions. Shipping details and fees will be disclosed to consumers before any transactions are made. Our team is operational 24/7, and you can call us at +1-888-799-0188 to place an order.
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