SCAT Modern Muscle Engine Rotating Assemblies

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

1-48504BI

Overview:

The SCAT Modern Muscle Engine Rotating Assemblies are precision-engineered kits designed to upgrade and rebuild Chrysler, Dodge, Jeep, and Ram engines ranging from the 5.7L Hemi to the high-performance 6.2L Hellcat and Trackhawk variants. These assemblies provide a balanced, forged rotating assembly that enhances engine durability and performance, making them ideal for enthusiasts and professional builders seeking reliable power upgrades or rebuild components.

Built to exacting standards, this rotating assembly kit is tailored for modern muscle engines, delivering improved strength and longevity while maintaining factory dimensions for straightforward installation. Whether you are restoring a classic muscle car or building a high-output street or track engine, SCAT’s rotating assemblies offer a solid foundation for your build.

Key Features:

SCAT’s rotating assemblies combine advanced materials and expert craftsmanship to ensure optimal performance and reliability. Key features include:

• Engine displacement of 6.2L (378 cubic inches) with a 3.927-inch bore and 3.900-inch stroke for modern muscle applications
• Fully balanced rotating assembly for smooth operation and reduced vibration
• Forged aluminum pistons with a dished design and two valve reliefs, featuring a +17cc piston head volume for improved combustion efficiency
• Forged 4340 steel crankshaft and connecting rods for superior strength and durability under high stress
• I-beam connecting rod design with a 6.125-inch center-to-center length for optimal rod geometry
• Plasmamoly piston ring facing material for enhanced wear resistance and sealing
• Stock size rod and main bearings included for precise fitment
• Floating wrist pins for reduced friction and reliable piston articulation
• Comprehensive kit including pistons, crankshaft, rods, bearings, and rings for a complete rotating assembly solution

Construction & Design:

SCAT’s rotating assemblies are crafted using premium forged materials to withstand the rigors of high-performance and forced induction applications. The crankshaft and connecting rods are forged from 4340 steel, known for its exceptional tensile strength and fatigue resistance. The pistons are forged aluminum, providing a lightweight yet durable component that helps reduce reciprocating mass and improve throttle response.

The pistons feature a dished crown with valve reliefs to ensure proper clearance and combustion chamber compatibility with modern Hemi and SRT engines. The use of plasmamoly piston rings enhances durability and sealing, contributing to consistent compression and oil control. Each assembly is internally balanced to factory specifications, ensuring smooth engine operation and longevity.

Installation & Fitment:

This rotating assembly is designed to fit a wide range of Chrysler, Dodge, Jeep, and Ram engines including the 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat & Trackhawk models. Installation requires standard engine rebuild procedures and is compatible with factory components such as harmonic balancers, flexplates, and flywheels, which are not included in this kit.

Professional installation is recommended to ensure proper clearances and torque specifications are met. This kit is ideal for engine builders looking to maintain OEM dimensions while upgrading to stronger forged internals.

What's Included:

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

Ideal For:

This SCAT rotating assembly kit is perfect for muscle car enthusiasts, professional engine builders, and performance tuners who demand durable, high-quality components for rebuilding or upgrading Chrysler and Dodge Hemi engines. It suits applications ranging from street performance to track use, providing a reliable foundation for increased power and engine longevity.

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.