Callies Mopar Gen III Cast Iron Engine Block

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

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Overview:

The Callies Mopar Gen III Cast Iron Engine Block is a premium replacement block designed specifically for a wide range of Chrysler, Dodge, Jeep, and Ram vehicles equipped with 5.7L to 6.4L Hemi engines. Engineered to meet or exceed OEM specifications, this cast iron block offers durability and reliability for enthusiasts and professional builders alike. Whether you are rebuilding a high-performance Hemi or restoring a factory engine, this block provides a solid foundation for your project.

Built to accommodate popular Mopar Gen III Hemi engines including the 5.7L, 6.1L SRT8, 6.4L 392, and the supercharged 6.2L Hellcat and Trackhawk variants, this block ensures compatibility and ease of installation. It is ideal for those seeking a direct replacement or a robust platform for performance upgrades.

Key Features:

This engine block combines rugged construction with precise engineering to deliver a dependable base for your Hemi build. Key features include:

• Cast iron construction for superior strength and heat resistance
• OEM deck height of 9.250 inches, maintaining factory dimensions
• Finished cylinder bores sized at 4.100 inches for optimal piston fitment
• Standard camshaft location compatible with Gen III Hemi components
• Includes billet steel main caps for enhanced durability under high loads
• Studs, main caps, and line honing professionally installed for precision assembly
• One-piece rear main seal design for improved sealing and reduced leaks
• Sold individually, allowing flexibility for custom engine builds

Construction & Design:

The Callies Mopar Gen III engine block is crafted from high-quality cast iron, chosen for its excellent wear resistance and thermal stability. This material ensures the block withstands the stresses of high-performance applications and prolonged use. The inclusion of billet steel main caps adds rigidity to the bottom end, reducing flex and maintaining bearing alignment under extreme conditions.

Each block is precision machined with finished cylinder bores and line honing already completed, saving valuable time during engine assembly. The OEM deck height and standard camshaft placement preserve compatibility with existing Mopar Gen III components, making this block a direct fit replacement without the need for modifications.

Installation & Fitment:

This engine block is designed for straightforward installation in most Chrysler, Dodge, Jeep, and Ram vehicles equipped with 5.7L, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat or Trackhawk engines. It fits directly with factory and aftermarket Gen III Hemi parts, minimizing the need for custom adjustments. Professional installation is recommended to ensure proper torque specifications and alignment during assembly.

What's Included:

• Cast iron Mopar Gen III engine block
• Billet steel main caps
• Main cap fasteners
• Studs installed
• Line honing completed

Ideal For:

This engine block is perfect for automotive enthusiasts, professional engine builders, and performance shops looking to rebuild or upgrade Mopar Gen III Hemi engines. It suits applications ranging from daily drivers to high-performance street and track vehicles, providing a durable and reliable foundation for power upgrades and long-term use.

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.