SCAT Modern Muscle Engine Rotating Assemblies

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

1-48503

Overview:

The SCAT Modern Muscle Engine Rotating Assembly is a precision-engineered rotating kit designed to fit a wide range of 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.

Built to exacting standards, this kit provides the essential rotating components needed to assemble a durable and responsive engine. Whether you are restoring a classic muscle car or upgrading a modern performance vehicle, SCAT’s rotating assembly delivers the strength and precision required for serious power and longevity.

Key Features:

This SCAT rotating assembly combines robust materials and expert craftsmanship to ensure optimal engine performance and durability. Key features include:

• Engine displacement: 6.2L / 378 cubic inches with a 3.927-inch (99.746mm) bore and 3.900-inch stroke
• Forged aluminum flat-top pistons with two valve reliefs and +3.30cc piston head volume for enhanced combustion efficiency
• Forged 4340 steel crankshaft and I-beam connecting rods for superior strength and durability
• Floating wrist pins and plasmamoly piston rings included for reliable sealing and reduced friction
• Stock-size rod and main bearings pre-installed for precise fitment and smooth operation
• Balanced rotating assembly (internal balance) to reduce vibration and improve engine longevity
• Designed to fit multiple Hemi engine variants including 5.7L, 6.1L, 6.4L, and 6.2L Hellcat configurations

Construction & Design:

SCAT’s rotating assembly is crafted using premium materials engineered for high-performance applications. The crankshaft and connecting rods are forged from 4340 steel, known for its exceptional tensile strength and fatigue resistance. This ensures the assembly can withstand the rigors of high RPM and increased power output.

The pistons are made from forged aluminum, offering a lightweight yet durable solution that helps reduce reciprocating mass and improve throttle response. The flat-top piston design with valve reliefs optimizes combustion chamber shape for efficient power delivery.

Each component is manufactured with tight tolerances and assembled with precision to guarantee compatibility and reliability. The use of plasmamoly piston rings enhances ring seal and wear resistance, contributing to longer engine life.

Installation & Fitment:

This rotating assembly is designed as a direct fit for most Chrysler, Dodge, Jeep, and Ram vehicles equipped with 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat & Trackhawk engines. Installation requires standard engine rebuild procedures and should be performed by a qualified technician to ensure proper clearances and torque specifications.

Note that this kit does not include the harmonic balancer, flexplate, flywheel, camshaft, lifters, timing chain and gears, gaskets, oil pump, or assembly lubricant. These components must be sourced separately to complete the engine build.

What's Included:

• Forged 4340 steel crankshaft
• Forged 4340 steel I-beam connecting rods (6.125-inch center-to-center length)
• Forged aluminum flat-top pistons with valve reliefs
• Floating wrist pins
• Plasmamoly piston rings
• Rod bearings (stock size)
• Main bearings (stock size)

Ideal For:

This SCAT rotating assembly is perfect for engine builders, performance enthusiasts, and professional shops looking to rebuild or upgrade modern muscle engines. It suits applications ranging from street performance to mild racing builds where reliability and strength are paramount. Compatible with a broad range of popular Hemi engines, it offers a versatile solution for many Chrysler, Dodge, Jeep, and Ram muscle and performance vehicles.

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.