SCAT Modern Muscle Engine Rotating Assemblies

Chrysler / Dodge / Jeep / Ram 5.7L Hemi / 6.1L SRT8 / 6.4L 392 / 6.2L Hellcat & Trackhawk

1-48500

Overview:

The SCAT Modern Muscle Engine Rotating Assembly is a precision-engineered rotating assembly designed for Chrysler, Dodge, Jeep, and Ram vehicles equipped with 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat & Trackhawk engines. This assembly is ideal for enthusiasts and professional builders seeking a reliable, high-quality foundation for engine rebuilds or performance upgrades. It delivers durability and strength necessary to handle increased power demands while maintaining engine balance and smooth operation.

Built to exacting standards, this rotating assembly offers a direct fit solution that simplifies the engine build process. It is perfect for those looking to restore or enhance their modern muscle engines with components that meet or exceed OEM specifications.

Key Features:

SCAT’s rotating assembly combines premium materials and expert craftsmanship to ensure optimal performance and longevity. Key features include:

• Forged 4340 steel crankshaft for superior strength and durability
• Forged aluminum flat-top pistons with two valve reliefs for enhanced clearance and combustion efficiency
• Forged 4340 steel I-beam connecting rods with a 6.125-inch center-to-center length for robust rod strength
• Precision-machined bore size of 3.927 inches (99.746 mm) with a 3.795-inch stroke for a 6.0L/368 displacement
• Floating wrist pins and plasmamoly piston ring facing for reduced friction and improved wear resistance
• Complete set of piston rings, rod bearings, and main bearings included at stock undersizes for a perfect fit
• Internal engine balance optimized for smooth operation
• Includes crankshaft, pistons, connecting rods, rod bearings, and main bearings for a comprehensive rotating assembly

Construction & Design:

The SCAT rotating assembly is crafted from premium forged materials to withstand the rigors of high-performance applications. The crankshaft is made from forged 4340 steel, known for its exceptional toughness and fatigue resistance, ensuring long-lasting durability under extreme conditions. The connecting rods also utilize forged 4340 steel with an I-beam design, providing an ideal balance of strength and weight savings.

Forged aluminum pistons feature a flat-top design with dual valve reliefs, allowing for optimal combustion chamber clearance and efficient airflow. The piston rings are coated with plasmamoly, a material that enhances ring sealing and reduces wear, contributing to improved engine longevity and performance.

Installation & Fitment:

This rotating assembly is designed as a direct replacement for Chrysler, Dodge, Jeep, and Ram engines with 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat & Trackhawk configurations. Installation requires standard engine rebuild procedures and should be performed by a qualified technician to ensure proper clearances and torque specifications. No modifications are typically necessary, making it an efficient upgrade or rebuild option.

What's Included:

• Forged 4340 steel crankshaft
• Forged aluminum flat-top pistons with valve reliefs
• Forged 4340 steel I-beam connecting rods (6.125" center-to-center)
• Piston rings with plasmamoly facing
• Rod bearings (stock undersize)
• Main bearings (stock undersize)

Ideal For:

This SCAT rotating assembly is ideal for engine builders, performance enthusiasts, and professional shops looking to rebuild or upgrade modern muscle engines. It suits applications ranging from street performance to moderate racing builds where reliability and strength are paramount. Whether restoring a classic muscle car or enhancing a modern Hellcat or Trackhawk, this assembly provides a solid foundation for your engine project.

SCAT Crankshafts is part of the enthusiast aftermarket, offering components and accessories tailored to drivers who demand more from their vehicles. Their catalog supports everything from maintenance refreshes to performance-oriented upgrades, with a focus on quality and compatibility across popular platforms. If you’re building for the street with an eye toward track performance, SCAT Crankshafts is a solid option.