Jeep JK Frame Swap for International Scout 800 / Scout II: Modern Restomod with LS3 and 6L80

Classic SUVs like the International Scout 800 and Scout II are timeless symbols of rugged off-road capability. Yet, decades of wear, outdated drivetrains, and suspension limitations can make these vehicles challenging for modern driving. For enthusiasts seeking a combination of vintage style and modern performance, a Jeep JK frame swap paired with an LS3 V8 and 6L80 transmission offers a transformative restomod solution.

This approach merges the durability and refinement of a modern Jeep JK chassis with the classic charm of the Scout, creating a vehicle capable of daily driving, overland adventures, and off-road exploration.

Why a Jeep JK Frame Swap?

The Scout’s original frame is robust for its era, but it lacks the stiffness, suspension geometry, and mounting points needed for high-horsepower upgrades like an LS3. Swapping in a Jeep JK frame provides:

·Modern suspension architecture for better ride quality, articulation, and load handling

·Strengthened chassis capable of supporting upgraded V8 engines and heavier axles

·Compatibility with modern braking and steering systems for enhanced safety

·Future-proof mounting options for drivetrains, fuel systems, and electronics

·Upgraded Jeep JK Dana 44 front and rear locking axles for better performance and offroading

This foundation allows you to transform a Scout into a reliable restomod without compromising structural integrity.

LS3 Engine and 6L80 Transmission Integration

The LS3 V8 is an ideal choice for Scout restomods. With around 430 horsepower and 424 lb-ft of torque, it provides more power than the original engines ever did, improving acceleration, towing capacity, and overall drivability.

Paired with the 6L80 six-speed automatic transmission, the LS3 delivers smooth shifts, modern gear ratios, and exceptional reliability. This combination ensures that your Scout performs like a modern SUV while retaining the classic aesthetic and off-road capability.

Key benefits include:

·Increased torque for climbing and trail performance

·Highway-friendly gearing for effortless cruising with better gas mileage

·Durability for long-term reliability under load and rough terrain

·Simplified electronic integration compared to older transmissions

·3 year 50k mile warranty from GM.

At Corsetti Cruisers, we integrate the LS3 and 6L80 fully with the Scout’s systems, including fuel, cooling, and wiring harnesses, ensuring the vehicle runs flawlessly while remaining street-legal and emissions-compliant where required.

Restomod Design Considerations

Beyond the frame swap and drivetrain, several other elements are critical to a high-quality Scout restomod:

·Suspension upgrades: Modern JK suspension allows for longer travel, improved ride quality, and better handling both on- and off-road.

·Brake and steering systems: Modern disc brakes and power steering improve safety and performance for higher-powered builds.

·Electrical integration: Custom wiring harnesses and ECU tuning ensure the LS3 and 6L80 operate efficiently with Scout systems.

·Interior and exterior touches: Vintage Scout styling, authentic panels, and classic decals can be preserved or restored while accommodating modern amenities such as air conditioning, sound systems, and digital gauges.

By combining these elements, the restomod remains true to the Scout’s heritage while delivering a modern driving experience.

Why This Build Matters

Classic Scouts are increasingly valuable, but they’re often mechanically limited. A Jeep JK frame swap with LS3 power and 6L80 transmission offers the best of both worlds: the collectible design and rugged appeal of the Scout with the capability and reliability of a contemporary SUV.

Owners gain a vehicle that:

·Can tackle off-road trails with confidence

·Handles modern traffic and highway driving easily

·Maintains or increases collectible value due to expert restoration and engineering

·Provides a platform for future upgrades or customizations

This approach has become increasingly popular among enthusiasts who want a Scout that’s not just a showpiece but a drivable, functional, adventure-ready vehicle.

Corsetti Cruisers Expertise

At Corsetti Cruisers, we specialize in bringing classic 4x4s into the modern era. Our frame swaps, engine conversions, and restomod projects combine precision engineering with the craftsmanship required for vintage vehicles. Each Scout build is treated individually, ensuring that:

·The frame is fully prepped and reinforced for long-term durability

·The LS3 and 6L80 are integrated with exacting tolerances

·Suspension and braking systems are optimized for performance and safety

·Interior and exterior finishes respect the vehicle’s history while embracing modern usability

We also provide full post-build documentation and support, making ongoing maintenance and upgrades straightforward.

Take Your Scout to the Next Level

A Jeep JK frame swap with an LS3 and 6L80 is not just a mechanical upgrade—it’s a transformation. It turns the International Scout 800 or Scout II into a capable, modern restomod that can be driven confidently on highways, overland adventures, and challenging trails, all while preserving its classic identity.

Explore our Scout restoration services and see how we combine vintage design, modern performance, and expert craftsmanship to create restomods that perform as beautifully as they look.