SCAT Modern Muscle Engine Rotating Assemblies

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

1-48503BI

Overview:

The SCAT Modern Muscle Engine Rotating Assemblies are precision-engineered kits designed for 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 complete rotating assembly solution that balances durability, strength, and performance for muscle car enthusiasts and professional builders alike.

Ideal for engine rebuilds or performance upgrades, this kit ensures reliable operation under demanding conditions while maintaining factory-like balance and smoothness. SCAT’s reputation for quality and attention to detail makes this rotating assembly a trusted choice for serious engine builders seeking to maximize power and longevity.

Key Features:

This rotating assembly kit combines premium materials and expert craftsmanship to deliver a robust foundation for your engine build. Key features include:

• Forged 4340 steel crankshaft for exceptional strength and durability
• Forged aluminum flat-top pistons with two valve reliefs and +3.30cc piston head volume for optimized combustion
• Forged 4340 steel I-beam connecting rods, 6.125 inches center-to-center length
• Precision balancing for smooth engine operation and reduced vibration
• Plasmamoly piston rings included for superior sealing and wear resistance
• Floating wrist pins for reliable piston articulation
• Stock size rod and main bearings included for direct fitment
• Compatible with 6.2L/378 engine displacement and 3.927-inch bore diameter

Construction & Design:

SCAT’s rotating assemblies are built with premium forged materials to withstand the rigors of high-performance applications. The crankshaft is crafted from forged 4340 steel, known for its toughness and fatigue resistance, ensuring long-lasting durability even under extreme loads. The connecting rods also utilize forged 4340 steel with an I-beam design, providing an optimal balance of strength and weight.

The pistons are forged aluminum with a flat-top design and two valve reliefs, engineered to maximize combustion efficiency and clearance. The use of plasmamoly piston rings enhances ring seal and reduces wear, contributing to improved engine longevity. Each component is precision balanced internally to minimize vibrations and promote smooth engine operation.

Installation & Fitment:

This rotating assembly kit is designed for direct fitment in 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 assembly procedures and is best performed by experienced engine builders or professional shops. No modifications to the block or ancillary components are typically necessary when using stock-sized bearings and components included in the kit.

What's Included:

• Forged 4340 steel crankshaft
• Forged aluminum flat-top pistons with valve reliefs
• Forged 4340 steel I-beam connecting rods
• Piston rings (plasmamoly)
• Rod bearings (stock size)
• Main bearings (stock size)

Ideal For:

This SCAT rotating assembly is perfect for enthusiasts and professional engine builders looking to rebuild or upgrade modern muscle engines with a focus on strength, reliability, and performance. It suits high-performance street builds, track applications, and any project requiring a durable rotating assembly capable of handling increased power levels without sacrificing engine balance or 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.