LS3 6.2 Engine 525HP | 4L80E Transmission Swap Package

The 525HP LS3 6.2L Engine & 4L80E Package

Build your next performance project around this complete LS3 6.2 Engine 525HP package paired with a heavy-duty 4L80E automatic transmission. This turnkey drivetrain combines a high-output LS3 V8 with a proven 4-speed automatic, giving restomod, muscle car, truck, and custom-build enthusiasts a complete powertrain solution. With only 35,000 original miles, the package includes the matching electronics, wiring harness, and engine accessories needed to simplify your installation.

Why Choose the LS3 6.2L?

The LS3 6.2 engine provides a strong foundation for modernizing classic vehicles and building high-performance custom projects. This configuration is rated at 525 HP, delivering substantial V8 performance while retaining the versatility and aftermarket support that make the LS platform popular with builders.

Pairing the LS3 with a 4L80E transmission also creates a practical combination for projects where engine performance and transmission durability are both important considerations.

Complete LS3 & 4L80E Drivetrain

Instead of sourcing the engine, transmission, electronics, wiring, and accessories separately, this LS3 6.2 engine package brings the major components together as one complete drivetrain.

What’s included:

• Engine: LS3 6.2L V8
• Output: 525 HP specification
• Transmission: Heavy-duty 4L80E 4-speed automatic
• Mileage: 35,000 original miles
• Electronics: Matching flashed ECU
• Wiring: Complete clean, uncut wiring harness
• Accessories: Alternator, power steering pump, water pump, and brackets
• Warranty: 1-year warranty

Built for Restomods, Muscle Cars & Trucks

This LS3 4L80E swap package is designed for builders who want to avoid the time and expense of piecing together a compatible drivetrain. The combination is well suited to classic muscle cars, restomods, custom trucks, and other performance-oriented projects where a complete GM powertrain is desired.

The 525HP LS3 provides the power, while the 4L80E adds a heavy-duty automatic transmission platform to the package.

35,000-Mile Turnkey Powertrain

With only 35,000 original miles, this LS3 and 4L80E combination provides a low-mileage starting point for your build. The included ECU, uncut wiring harness, and front-end accessories further reduce the need to track down individual components and compatibility details.

Having the engine and transmission together also gives builders a more cohesive foundation when planning a complete drivetrain installation.

Simplify Your LS Swap

A successful LS3 engine swap requires more than finding an engine. Electronics, wiring, accessories, and transmission compatibility can quickly increase the cost and complexity of a project.

This complete package addresses those major components in one setup, including the flashed ECU, complete wiring harness, engine accessories, and matching 4L80E automatic transmission.

Backed by a 1-Year Warranty

This 525HP LS3 engine and 4L80E transmission package is backed by a 1-year warranty, giving you additional confidence when investing in a complete performance drivetrain. The combination of low mileage and included supporting components makes it a practical foundation for a wide range of custom builds.

Shop the LS3 6.2 Engine 525HP Package

If you’re looking for an LS3 6.2 engine 525HP package with a matching 4L80E transmission, 35,000 original miles, complete electronics, wiring, and front-end accessories, this turnkey drivetrain is ready for your next project. Built for restomods, muscle cars, trucks, and performance swaps, it provides a complete path to modern GM V8 power.