Callies Mopar Gen III Cast Iron Engine Block

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

S0032

Overview:

The Callies Mopar Gen III Cast Iron Engine Block is a premium replacement block designed specifically for Mopar’s Gen III Hemi engines, including the 5.7L Hemi, 6.1L SRT8, 6.4L 392, and the high-performance 6.2L Hellcat and Trackhawk variants. Crafted for enthusiasts and professional builders seeking durability and reliability, this block offers a direct OEM-style fit with enhanced strength and precision. It comes paired with an OptiTorque main stud kit to ensure superior main cap retention under high-stress conditions, making it ideal for performance builds and engine rebuilds.

Key Features:

Built to meet the demands of high-performance Mopar engines, this engine block delivers robust construction and precise engineering. Key features include:

• Cast iron construction for exceptional strength and durability
• OEM-style 9.750-inch deck height for compatibility with factory components
• Finished cylinder bores with a standard 4.100-inch bore diameter, allowing for precise machining up to a maximum of 4.165 inches
• Standard camshaft location with no raised cam option
• Billet steel 2-bolt main caps included for enhanced bottom-end stability
• OptiTorque main stud kit included for superior main cap fastening and improved engine reliability
• Freeze plugs included for complete block assembly
• 1-piece rear main seal style for effective sealing and reduced oil leaks
• Remanufactured block not applicable; this is a brand-new casting

Construction & Design:

This engine block is constructed from high-quality cast iron, chosen for its excellent wear resistance and ability to withstand the rigors of high-performance applications. The block features OEM deck height and bore dimensions to ensure seamless integration with existing Mopar Gen III components. The billet steel main caps provide superior strength and rigidity compared to stock cast caps, reducing flex and maintaining crankshaft alignment under extreme loads. The OptiTorque main stud kit enhances clamping force on the main caps, improving durability and reliability during aggressive driving or racing conditions.

Installation & Fitment:

The Callies Mopar Gen III Cast Iron Engine Block is designed as a direct replacement for factory Gen III Hemi blocks, ensuring straightforward installation with no modifications required for compatible engines. It fits Chrysler, Dodge, Jeep, and Ram vehicles equipped with 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat or Trackhawk engines. While main bearings and cam bearings are not included, the block comes fully prepared with finished cylinder bores and freeze plugs installed, simplifying the assembly process for engine builders.

What's Included:

• Callies Mopar Gen III Cast Iron Engine Block
• Billet steel 2-bolt main caps
• OptiTorque main stud kit
• Main cap fasteners
• Freeze plugs

Ideal For:

This engine block is ideal for Mopar enthusiasts, professional engine builders, and performance tuners looking to rebuild or upgrade Gen III Hemi engines with a focus on strength and reliability. It suits applications ranging from street performance to track use, including high-horsepower builds requiring enhanced bottom-end durability.

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.