Callies Forged 4340 Steel Crankshaft

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

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Overview:

The Callies Forged 4340 Steel Crankshaft is engineered for high-performance applications in a wide range of Chrysler, Dodge, Jeep, and Ram vehicles equipped with Hemi engines from 5.7L to 6.4L, including the 6.1L SRT8, 6.2L Hellcat, and 6.4L 392 variants. Designed to replace factory crankshafts, this premium forged crankshaft offers enhanced strength and durability to withstand the rigors of aggressive driving, racing, and engine builds requiring superior reliability.

Ideal for enthusiasts and professional builders seeking a robust rotating assembly component, this crankshaft delivers improved fatigue resistance and precision balance, ensuring smooth engine operation and longevity under high-stress conditions.

Key Features:

Built to meet the demands of high-performance Hemi engines, the Callies Forged 4340 Steel Crankshaft includes the following features:

• Constructed from premium forged 4340 steel for exceptional strength and toughness
• Internal engine balance optimized for smooth operation and reduced vibration
• Lightened design to reduce rotational mass and improve throttle response
• Standard crankshaft snout style for direct fitment with factory components
• Engine stroke of 3.800 inches, compatible with multiple Hemi engine displacements
• Rod journal diameter of 2.100 inches and main journal diameter of 2.559 inches for precise bearing fitment
• Rear main seal style is a one-piece design for reliable sealing
• Requires narrow bearings (rod and main bearings not included)
• Weight approximately 52 lbs, balancing durability and performance

Construction & Design:

This crankshaft is meticulously forged from 4340 chromoly steel, a material renowned for its high tensile strength and fatigue resistance, making it an ideal choice for performance engine components. The forging process enhances the grain structure of the steel, resulting in a crankshaft that can endure extreme loads and high RPMs without failure.

Its internal balance design reduces the need for external balancing weights, contributing to smoother engine operation and less wear on related components. The lightened construction reduces rotational inertia, allowing the engine to rev more freely and respond quicker to throttle inputs.

Installation & Fitment:

The Callies Forged 4340 Steel Crankshaft is designed as a direct replacement for factory crankshafts in Chrysler, Dodge, Jeep, and Ram vehicles equipped with 5.7L Hemi, 6.1L SRT8, 6.4L 392, and 6.2L Hellcat & Trackhawk engines. Installation requires the use of narrow bearings, which are not included, so ensure compatible bearings are sourced separately.

Professional installation is recommended to verify proper clearances and fitment. No modifications to the engine block or related components are typically necessary, making this crankshaft a straightforward upgrade for performance builds or engine rebuilds.

What's Included:

• One (1) Callies Forged 4340 Steel Crankshaft
• Mechanical and electrical failure coverage plan

Ideal For:

• Performance enthusiasts upgrading or rebuilding Chrysler, Dodge, Jeep, or Ram Hemi engines
• Engine builders requiring a durable, high-strength crankshaft for street or track use
• Racers and tuners seeking improved engine reliability under high RPM and load conditions
• Anyone needing a direct-fit forged crankshaft for 5.7L to 6.4L Hemi engine platforms

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.