MANLEY PERFORMANCE Evox Billet Tuff Crankshaft 807298072654 4340 94MM

( Brand: Manley Performance ), ( Part Type: Crankshaft ), ( Air Freight Prohibited: False ), ( UPC: 807298072654 )

Review MANLEY PERFORMANCE Evox 4340 Billet 94mm Stroke Tuff Series Crankshaft fits TURBO

The **Manley Performance 807298072654 EVOX 4340 Billet 94mm Turbo Tuff Crankshaft** is a precision-engineered, high-performance component designed to elevate the power, durability, and reliability of high-stress turbocharged applications. Crafted from **forged 4340 billet steel**, this crankshaft represents the pinnacle of automotive engineering, offering an exceptional balance of strength, weight savings, and resilience under extreme loads. The **94mm main journal** provides a substantial increase in crankshaft stiffness compared to stock designs, reducing torsional vibration and enhancing overall rigidity, which is critical for turbocharged engines where torque demands are significantly higher. The **Turbo Tuff** treatment further enhances its durability by improving fatigue resistance and wear characteristics, ensuring longevity even under the most aggressive driving conditions or forced induction setups.

What sets this crankshaft apart is its **billet construction**, which eliminates the inherent weaknesses found in castings by eliminating porosity and internal stress concentrations. This results in a lighter yet stronger crankshaft that can better handle the high RPMs and torque spikes associated with turbocharged engines without compromising structural integrity. The **EVOX** designation signifies Manley s proprietary design philosophy, incorporating optimized counterweights and precise machining to minimize vibration and maximize power transfer efficiency. Whether installed in a naturally aspirated engine seeking a performance upgrade or a turbocharged application pushing the limits of horsepower, this crankshaft delivers the robustness needed to withstand the demands of modern high-performance driving.

Ideal for applications ranging from **LS-based engines** to **Chevy small-block and big-block platforms**, this crankshaft is a direct bolt-on replacement for many stock designs, making it a straightforward yet transformative upgrade. Its **precision-ground journals and bearings** ensure smooth operation and reduced friction, while the **high-quality 4340 steel** provides the tensile strength and fatigue resistance required to handle the extreme stresses of turbocharged operation. For enthusiasts and builders seeking a **high-performance crankshaft** that combines strength, precision, and reliability, the Manley EVOX 4340 Billet 94mm Turbo Tuff Crankshaft is an outstanding choice delivering both immediate performance gains and long-term durability for the most demanding applications.

### **Pros and Cons of buying a Manley Performance 807298072654 EVOX 4340 Billet 94mm Turbo Tuff Crankshaft**

1. **High-Quality Material** The crankshaft is made from **4340 billet steel**, a premium alloy known for its strength, durability, and resistance to fatigue. This material is commonly used in high-performance and racing applications, ensuring long-term reliability under heavy loads.

2. **Precision Machining** Manley Performance is a reputable manufacturer that specializes in custom and high-performance drivetrain components. Their cranks are **precision-machined** to tight tolerances, reducing vibration and improving overall engine smoothness.

3. **Turbo Tuff Certification** The "Turbo Tuff" designation indicates that the crankshaft has been **stress-tested and certified** to handle the additional forces generated by forced induction (turbocharging). This makes it a safer choice for turbocharged applications compared to stock cranks.

4. **Balanced for Performance** The crank is **dynamically balanced**, which helps reduce engine vibration, improves power delivery, and extends the lifespan of related components like rods, bearings, and the engine block.

5. **Compatibility with High-Performance Engines** The **94mm stroke** (assuming this refers to the rod length or crankshaft journal size) is a common dimension in high-performance builds, allowing for better power output while maintaining structural integrity. This crank is likely designed for **LS-based engines, small-block Chevy, or similar platforms**, which are popular in performance and racing circles.

6. **Warranty and Support** Manley Performance offers **warranties** on their products, providing peace of mind for customers investing in a high-end component. Their customer service and technical support are also well-regarded in the performance community.

7. **Enhanced Durability** The **billet construction** (as opposed to cast) eliminates internal voids and inconsistencies found in cast cranks, making it less prone to cracking or failure under extreme stress.

8. **Potential for Increased Power** A well-built crankshaft like this can **support higher RPMs and torque** without deforming, allowing for more aggressive tuning and power gains in turbocharged applications.

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1. **High Cost** High-performance billet cranks are **significantly more expensive** than stock or aftermarket cast cranks. The price reflects the quality, but it may be a substantial investment, especially for enthusiasts on a budget.

2. **Installation Complexity** Replacing a crankshaft typically requires **disassembling the engine almost entirely**, including removing the block from the vehicle. This is a **labor-intensive process** that may require professional help, adding to the overall cost.

3. **Potential for Overkill (If Not Needed)** If the engine is not heavily modified or not running extreme power levels, a **stock or upgraded cast crank** (such as a forged or high-quality aftermarket option) may suffice. A billet crank is best suited for **high-RPM, high-torque, or turbocharged builds** not every project requires it.

4. **Limited Stock Availability** Since this is a **custom billet crank**, it may not be readily available in all regions. Ordering could involve **long lead times**, especially if the part is backordered or requires special machining.

5. **Compatibility Concerns** While Manley cranks are designed for common platforms (e.g., LS engines), **double-checking bolt patterns, rod length, and main journal sizes** is crucial to avoid clearance or fitment issues. Incorrect sizing could lead to **rod bearing failure or engine damage**.

6. **Maintenance and Future Mods** If the engine is modified further (e.g., bigger turbo, more aggressive camshafts, or higher compression), the crank must still be **properly supported** with matching components (e.g., rods, bearings, oil pump). A billet crank alone does not guarantee reliability if the rest of the drivetrain is not upgraded accordingly.

7. **Potential for Misuse** If the engine is **not properly built around the crank** (e.g., weak rods, soft bearings, or inadequate oil flow), the crank s advantages may be negated, and failure could still occur under extreme conditions.

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### **Recommendation**

The **Manley Performance 4340 Billet Turbo Tuff Crankshaft** is one of the best options available for **high-performance, turbocharged, or heavily modified engines** where durability, strength, and precision are critical. Its **4340 billet steel construction, Turbo Tuff certification, and dynamic balancing** make it an excellent choice for enthusiasts pushing their engines to extreme limits whether for **drag racing, street tuning, or professional racing**.

However, it is **not a necessary upgrade for every build**. If the engine is **stock or lightly modified**, a **forged cast crank or a high-quality aftermarket option** (such as those from **Crane, JE, or Scat**) may provide sufficient strength at a lower cost. The decision to invest in a billet crank should be based on:

- **Power goals** (Is the engine running significant boost or high RPMs?)

- **Budget** (Is the cost justified by the project s requirements?)

- **Engine build quality** (Are rods, bearings, and oil flow adequate to support the crank?)

- **Long-term reliability needs** (Is this a race engine or a daily driver that will see heavy use?)

- You are building a **high-performance turbocharged engine** (e.g., 1,000 HP, aggressive nitrous, or extreme boost).

- You prioritize **maximum durability and longevity** over cost savings.

- Your engine is **properly supported** with matching components (e.g., forged rods, high-quality bearings, adequate oil flow).

- You have the **budget and patience** for a high-end drivetrain upgrade.

- Your engine is **stock or lightly modified** and does not require extreme strength.

- You are on a **tight budget** and can achieve similar results with a **forged cast crank or a reputable aftermarket option**.

- You are unsure about **fitment, rod length, or engine support** consult a professional before purchasing.

- The engine will not see **high RPMs or heavy loads** regularly.

For most **serious performance builds**, this crankshaft is a **worthwhile investment** that will pay off in reliability and power. However, it should be part of a **holistic engine upgrade plan**, not a standalone fix. Always ensure the rest of the drivetrain is up to the task before committing.

Details:

Enhanced with multi-step heat treatment and nitrating for longevity. Built with durability and precision in mind, the Manley EVOX Turbo Tuff Series crankshaft is an essential component for custom Turbo builds high-power setups. Its robust construction and proven manufacturing standards ensure consistent Performance, whether in street or racing environments. The fully knife-edged counterweights contribute to precise balance and stability, reducing vibrations promoting smoother operation during high-RPM runs.

Proper installation and tuning are recommended to fully realize the benefits of this high-Performance crankshaft. A key feature of the Turbo Tuff Series crankshaft is increased 94mm stroke, offering a 9.3% boost over stock specifications. Lightweight design with fully knife-edged counterweights for balance. Each crankshaft undergoes rigorous quality assurance processes including stress relief, shot preening, and 100% menfolks testing to guarantee reliability longevity.

Crafted from premium 4340 billet material, this crankshaft features a lightweight yet robust construction that ensures optimal Performance under intense conditions. The Manley EVOX 4340 Billet 94mm Stroke Turbo Tuff Series Crankshaft is designed for high horsepower and boost applications, providing enhanced strength durability demanding engine builds. This design is ideal for enthusiasts seeking to maximize their engines displacement and power output. Undergoes stress relief, shot preening, and menfolks testing for quality.

This modification effectively raises engine displacement, translating to more torque and horsepower. The multi-step heat treatment and nitrating further enhance its resistance to wear fatigue, making it suitable for high-Performance Turbocharged applications.

specifications cranshafengin:

• for models: Turbo
• brand: Manley Performance
• part type: Crankshaft
• air freight prohibited: False
• upc: 807298072654

returns cranshafengin:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

general cranshafengin:

• condition: New
• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts

seller cranshafengin:

• rating: 98.5%
• city: Saint Paul, Minnesota
• # reviews: 45598

payments cranshafengin:

• other
• credit card: Mastercard
• wallet: Paypal

offer cranshafengin:

• quantity: 1
• sold: 0
• started: March 27, 2026
• options: Ship-to-home
• availability: In Stock

shipping cranshafengin:

• cost: $0.00
• type: Fixed
• transit: 3-5 Days
• class: Standard
• service: Standard

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