SCAT Modern Muscle Engine Rotating Assemblies

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

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Overview:

The SCAT Modern Muscle Engine Rotating Assemblies are precision-engineered kits designed to upgrade and rebuild high-performance Chrysler, Dodge, Jeep, and Ram engines, including the 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat & Trackhawk variants. These assemblies provide a reliable foundation for enthusiasts and professional builders seeking durable, forged components that withstand the rigors of modern muscle car performance. Ideal for engine rebuilds or performance upgrades, SCAT’s rotating assemblies deliver enhanced strength and reliability for street, strip, or track applications.

Each kit is built around a 6.0L/368 cubic inch displacement with a 3.927-inch bore and 3.795-inch stroke, offering a balanced combination of power potential and durability. SCAT’s rotating assemblies are engineered to meet the demands of high-output engines while maintaining compatibility with factory components.

Key Features:

SCAT’s rotating assemblies combine premium materials and expert craftsmanship to ensure optimal engine performance and longevity. Key features include:

• Forged 4340 steel crankshaft for superior strength and fatigue resistance
• Forged 4340 steel I-beam connecting rods with 6.125-inch center-to-center length
• Forged aluminum pistons with dome design and trough for enhanced combustion efficiency
• Plasmamoly piston rings included for excellent wear resistance and sealing
• Floating wrist pins for reduced friction and improved durability
• Stock size rod and main bearings for direct fitment with factory tolerances
• Internal engine balance optimized for smooth operation
• Complete rotating assembly kit including pistons, rods, crankshaft, bearings, and rings
• Designed specifically for modern muscle engines including Hemi and Hellcat platforms

Construction & Design:

SCAT’s rotating assemblies are crafted with meticulous attention to material selection and manufacturing processes. The crankshaft and connecting rods are forged from 4340 steel, a high-strength alloy known for its toughness and resistance to stress and fatigue. This ensures the rotating assembly can handle increased horsepower and torque without compromising reliability.

The pistons are forged aluminum, featuring a dome shape with a trough to optimize combustion chamber dynamics and improve power output. The use of plasmamoly piston rings enhances ring seal and longevity under high-performance conditions. The floating wrist pins reduce friction and wear, contributing to smoother engine operation and extended component life.

Installation & Fitment:

This rotating assembly is designed for direct fitment in Chrysler, Dodge, Jeep, and Ram engines equipped with 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat & Trackhawk powerplants. Installation requires standard engine rebuilding procedures and precise machining to ensure proper clearances and tolerances. While the kit does not include harmonic balancer, flexplate, flywheel, camshaft, lifters, timing components, or gaskets, it is compatible with factory or aftermarket parts for a complete engine build.

Professional installation is recommended to achieve optimal performance and reliability, especially when integrating this assembly into high-output or modified engines.

What's Included:

• Forged 4340 steel crankshaft
• Forged 4340 steel I-beam connecting rods (6.125-inch length)
• Forged aluminum pistons with dome and trough design
• Plasmamoly piston rings
• Rod and main bearings (stock size)
• Floating wrist pins

Ideal For:

This SCAT rotating assembly kit is ideal for automotive enthusiasts, engine builders, and professional shops focused on rebuilding or upgrading modern muscle engines. It suits applications ranging from street performance to drag racing and track use, providing a durable and reliable rotating assembly foundation for Chrysler and Dodge Hemi-powered vehicles, including the powerful Hellcat and Trackhawk models.

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.