SCAT Modern Muscle Engine Rotating Assemblies

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

1-48505

Overview:

The SCAT Modern Muscle Engine Rotating Assembly is a precision-engineered rotating assembly 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 builds or rebuilds. It offers a robust combination of forged components that deliver durability and strength under demanding conditions.

Built to exacting standards, this rotating assembly provides a solid upgrade path for those looking to enhance engine longevity and performance potential without compromising factory fitment. Whether you are restoring a muscle car or building a high-performance street or track engine, this SCAT kit offers the essential components needed for a dependable rotating assembly.

Key Features:

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

• Forged 4340 steel crankshaft for superior strength and fatigue resistance
• Forged 4340 steel I-beam connecting rods, 6.125 inches center to center
• Forged aluminum dome pistons with a trough design for improved combustion efficiency
• Floating wrist pins for reduced friction and enhanced durability
• Plasmamoly piston rings included for excellent sealing and wear resistance
• Stock size rod and main bearings for direct fitment without machining
• Engine stroke of 3.900 inches and bore diameter of 3.927 inches (99.746 mm)
• Designed for a 6.2L/378 cubic inch displacement with a 1-piece rear main seal style
• Internal engine balance configuration for smooth operation

Construction & Design:

The SCAT Modern Muscle Engine Rotating Assembly is constructed using premium forged materials to withstand the rigors of high-performance applications. The crankshaft and connecting rods are crafted from forged 4340 steel, known for its exceptional strength and toughness, ensuring long-lasting durability even under elevated RPM and load conditions.

The pistons are made from forged aluminum, providing a lightweight yet strong component that helps reduce reciprocating mass and improve throttle response. The dome piston design with a trough enhances combustion chamber dynamics, contributing to efficient power delivery. The assembly is balanced internally to maintain smooth engine operation and reduce vibration.

Installation & Fitment:

This rotating assembly is designed for direct fitment in most Chrysler, Dodge, Jeep, and Ram vehicles equipped with 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat & Trackhawk engines. It requires no modifications to the block or other engine components, making installation straightforward for experienced engine builders and professional shops.

Note that this kit does not include harmonic balancer, flexplate, flywheel, camshaft, lifters, timing chain, gears, gaskets, oil pump, or assembly lubricant, so these components must be sourced separately. Proper engine assembly procedures and torque specifications should be followed to ensure optimal performance and reliability.

What's Included:

• Forged 4340 steel crankshaft
• Forged 4340 steel I-beam connecting rods (6.125" center to center)
• Forged aluminum dome pistons with trough design
• Floating wrist pins
• Plasmamoly piston rings
• Rod bearings (stock size)
• Main bearings (stock size)

Ideal For:

This SCAT rotating assembly is perfect for muscle car restorers, performance engine builders, and enthusiasts upgrading or rebuilding Chrysler-based Hemi engines. It suits applications ranging from street performance to moderate track use, providing a reliable and durable rotating assembly foundation that supports enhanced 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.