Callies Forged 4340 Steel Crankshaft

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

YYA-E1Q-CS

Overview:

The Callies Forged 4340 Steel Crankshaft is a premium replacement crankshaft engineered for high-performance Chrysler, Dodge, Jeep, and Ram Hemi engines ranging from 5.7L to 6.4L, including the 6.1L SRT8, 6.2L Hellcat, and Trackhawk variants. Designed for enthusiasts and professional builders seeking durability and reliability under extreme conditions, this crankshaft offers a robust solution for engine rebuilds and upgrades.

Its forged 4340 steel construction ensures superior strength and fatigue resistance compared to cast or billet alternatives, making it ideal for high-horsepower applications. The crankshaft’s internal engine balance and lightened design contribute to smoother operation and improved throttle response, enhancing overall engine performance.

Key Features:

Built to meet the demands of performance and durability, the Callies Forged 4340 Steel Crankshaft includes the following key features:

• Constructed from high-strength forged 4340 steel for exceptional toughness
• Engine stroke of 4.080 inches optimized for Hemi engine configurations
• Internal engine balance for reduced vibrations and smoother running
• Lightened design to reduce rotational mass and improve throttle response
• Standard crankshaft snout style for direct fitment with OEM components
• Requires narrow bearings for proper installation (bearings not included)
• Rod journal diameter of 2.100 inches and main journal diameter of 2.559 inches
• Rear main seal style is 1-piece for reliable sealing
• Weight approximately 52 lbs, sold individually

Construction & Design:

This crankshaft is precision forged from 4340 steel, a material known for its excellent strength-to-weight ratio and resistance to wear and fatigue. The forging process aligns the steel grain structure, enhancing durability and toughness critical for high-performance engines. The crankshaft is internally balanced, which reduces harmonic vibrations and contributes to engine longevity and smoothness.

The lightened design reduces the overall rotating mass without compromising strength, allowing for quicker engine revving and improved responsiveness. The journals are machined to exacting tolerances to ensure optimal bearing fitment and longevity. The 1-piece rear main seal style simplifies installation and improves sealing reliability.

Installation & Fitment:

The Callies Forged 4340 Steel Crankshaft is designed as a direct replacement for most Chrysler, Dodge, Jeep, and Ram Hemi engines in the 5.7L to 6.4L range, including the 6.1L SRT8, 6.2L Hellcat, and Trackhawk models. Installation requires the use of narrow bearings, which are not included and must be sourced separately. Proper bearing selection and installation are critical to ensure optimal performance and longevity.

Due to its standard crankshaft snout style, it fits OEM components without modification. Professional installation is recommended to ensure correct torque specifications and clearances are met.

What's Included:

• One Callies Forged 4340 Steel Crankshaft (part # YYA-E1Q-CS)
• Mechanical and electrical failure coverage plan

Ideal For:

This crankshaft is ideal for performance enthusiasts, engine builders, and professional mechanics upgrading or rebuilding Chrysler, Dodge, Jeep, and Ram Hemi engines. It suits applications ranging from street performance to racing and heavy-duty use where enhanced strength and reliability are paramount.

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.