
*REMANUFACTURED - GM Warranty Does NOT Apply LS7 427ci / 7.0L Engine 505 HP @ 6300 RPM
This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
- *REMANUFACTURED - GM Warranty Does NOT Apply
- 505 HP @ 6300 RPM
- 470 ft/lbs TQ @ 4800 RPM
- Not for Marine Use
Notes: - Assembly does not include any electronics
- LS7 Controller Kit - 809-19258553 available for non-Corvette applications. Kit includes electronic throttle pedal, which is required for throttle input to the ECU
- Comes assembled with 14-inch Corvette Z06 168-tooth flywheel
- LS7 is the same size and mounts the same as other LS-Series engines
- Use oil hose adapters - 809-25534412 to adapt to AN -12 fittings
- Intended for pre-1976 street vehicles or any off-road vehicle
- Use accessory drive kits - 809-19257325 without A/C or 809-19155067 with A/CRequires:
- Dry sump oil lines
- Dry sump tank
- Engine processor
- Air filter/air box
- Accessory drive
- Engine control harness
- Engine control module
- Starter
LS7 427ci / 7.0L Engine
A Living Legend with 427 Classic Cubic Inches!
Unleash factory-engineered supercar performance with the Chevrolet Performance 7.0L 505HP LS7 Crate Engine, available at JEGS. Built by Chevrolet Performance, this legendary LS7 crate engine delivers race-inspired power, precision engineering, and proven reliability straight from GM. Known for its massive displacement and high-revving capability, the Chevrolet Performance 7.0L 505HP LS7 Crate Engine is a top choice for enthusiasts seeking maximum horsepower and torque in a turnkey package. Whether for a restomod, track car, or high-end street build, this engine offers uncompromising performance backed by OEM quality.
Show More
Performance Benefits & Key Features
The LS7 crate engine is engineered to produce an impressive 505 horsepower and approximately 470 lb-ft of torque, delivering explosive acceleration and strong top-end power. Its 7.0L displacement (427 cubic inches) provides exceptional airflow and combustion efficiency, making it one of the most powerful naturally aspirated LS engines available.
Key features include a lightweight aluminum block and cylinder heads, which reduce overall engine weight while improving heat dissipation. High-flow rectangular port heads, a performance camshaft, and titanium intake valves contribute to superior airflow and high-RPM capability. The forged steel crankshaft and high-strength internals ensure durability under demanding conditions, whether on the street or at the track.
This crate engine is designed for consistent, repeatable performance, with factory-level assembly and testing that eliminates the guesswork of custom builds. Enthusiasts benefit from instant throttle response, broad power delivery, and the confidence of a proven GM performance platform. It’s an ideal solution for those who want maximum output without sacrificing reliability.
Fitment, Compatibility & Applications
The Chevrolet Performance 7.0L 505HP LS7 Crate Engine is designed for compatibility with a wide range of GM LS-based platforms, making it an excellent choice for both direct replacements and LS swap projects. It fits seamlessly into vehicles originally equipped with LS engines, as well as custom builds requiring a high-performance upgrade.
Perfect for street performance, drag racing, and track-focused builds, the LS7 is commonly used in Camaros, Corvettes, Chevelles, and other classic muscle cars, as well as modern performance vehicles and custom hot rods. Its compatibility with various transmissions, engine mounts, and aftermarket components makes integration straightforward for experienced builders.
This engine is especially popular among enthusiasts seeking a naturally aspirated setup with race-level performance, as well as those building high-end restomods that demand both power and refinement. Its versatility allows it to perform equally well on the street and under competitive conditions.
Backed by Chevrolet Performance’s reputation for engineering excellence and race-proven durability, the LS7 crate engine delivers unmatched power and reliability. Explore the available options at JEGS to bring legendary LS7 performance to your next build and experience the pinnacle of naturally aspirated LS power.








