Callies Mopar Gen III Cast Iron Engine Block

2005–Present Chrysler / Dodge / Jeep / Ram 5.7L Hemi / 6.1L SRT8 / 6.4L 392 / 6.2L Hellcat & Trackhawk

S0036

Overview:

The Callies Mopar Gen III Cast Iron Engine Block is a premium replacement block designed specifically for Chrysler, Dodge, Jeep, and Ram vehicles equipped with the 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat & Trackhawk engines. Crafted to meet or exceed OEM specifications, this cast iron block offers exceptional durability and strength for high-performance and heavy-duty applications. It is ideal for engine builders and enthusiasts seeking a reliable foundation for rebuilding or upgrading their Mopar Gen III Hemi engines.

Built to withstand the rigors of increased power and torque, this engine block supports a wide range of performance builds, from street-driven muscle cars to track-focused machines. Its robust construction ensures long-lasting performance and reliability under demanding conditions.

Key Features:

This Callies engine block combines OEM design with high-quality materials and precision engineering to deliver a dependable platform for your Mopar Gen III Hemi build. Key features include:

• Cast iron construction for superior strength and durability
• OEM-style 9.250-inch deck height for compatibility with factory components
• Finished cylinder bores sized at 4.090 inches, ready for final honing and assembly
• Includes billet steel main caps and main studs for enhanced bottom-end stability
• Standard camshaft location with no raised cam option, maintaining factory geometry
• One-piece rear main seal design for improved sealing and ease of installation
• Main cap fasteners included to simplify assembly
• Engineered to fit multiple Mopar Gen III Hemi engines including 5.7L, 6.1L, 6.4L, and 6.2L variants

Construction & Design:

The Callies Mopar Gen III engine block is constructed from high-grade cast iron, chosen for its excellent wear resistance and ability to handle high cylinder pressures. The block features precision-machined surfaces and finished cylinder bores to ensure optimal piston fitment and sealing. Billet steel main caps provide superior strength over stock cast caps, reducing main bearing movement and enhancing crankshaft stability under high loads.

Designed with a standard camshaft location, the block maintains OEM geometry, allowing for straightforward installation of factory or aftermarket camshafts without modification. The 1-piece rear main seal design improves oil retention and simplifies seal replacement during rebuilds.

Installation & Fitment:

This engine block is a direct fit replacement for Mopar Gen III Hemi engines in Chrysler, Dodge, Jeep, and Ram vehicles equipped with 5.7L, 6.1L, 6.4L, and 6.2L Hellcat & Trackhawk powerplants. Installation requires standard engine assembly procedures and compatible components. The block comes ready with finished cylinder bores, but final honing and machining may be necessary depending on your build specifications.

It includes main studs and billet main caps to facilitate a secure bottom-end assembly. Note that main bearings, cam bearings, and freeze plugs are not included and must be sourced separately. Proper engine blueprinting and assembly by a qualified technician are recommended for optimal performance and longevity.

What's Included:

• Cast iron Mopar Gen III engine block
• Billet steel main caps
• Main studs and main cap fasteners
• Finished cylinder bores

Ideal For:

This engine block is perfect for performance engine builders, professional shops, and enthusiasts who require a durable, OEM-compatible foundation for high-output Mopar Gen III Hemi engines. Whether rebuilding a street cruiser, upgrading a muscle car, or assembling a race engine, this block provides the strength and reliability needed to support increased power levels and demanding driving conditions.

Callies Performance is known for high-end rotating-assembly components—especially crankshafts and connecting rods—built for serious horsepower and demanding race conditions. Focused on precision manufacturing and durability, Callies supports builders who need confidence at high RPM and high cylinder pressure, whether it’s drag racing, boosted street builds, or endurance-focused powerplants.