EAGLE SPECIALTY PROD 6458 Big Block Cast Steel Crankshaft 91-95/96-00 V8 7.4L/454 11235607

( Brand: Eagle Specialty Prod ), ( Manufacturer Part Number: 6458 ), ( Part Type: Block Crankshaft )

Review EAGLE SPECIALTY PROD 91-95/96-00 Chevy V8 7.4l/454 Big Block Cast Steel Crankshaft fits 454

The **Eagle Specialty Products 6458** is a high-performance, forged cast steel crankshaft designed specifically for the legendary **Chevy V8 7.4L (454 cubic inch) big block engine** built between **1991 and 2000**, including both the **91-95 and 96-00 model years**. Engineered to deliver exceptional durability, strength, and reliability, this crankshaft is a premium replacement for stock units, offering superior resistance to fatigue, torsional stress, and wear critical factors for high-performance applications, street rods, muscle cars, and heavy-duty towing setups.

Crafted from **high-grade cast steel**, the **6458 crankshaft** features a **fully balanced, precision-machined design** with **11235607** as its part number, ensuring smooth operation and extended engine life. The **7.4L displacement** requires a crankshaft with precise journal and rod journal dimensions, and Eagle Specialty Products delivers with **accurate main and rod bearing journal sizing** to match OEM specifications while enhancing performance. The **main journal diameter** and **rod journal offset** are meticulously engineered to handle the increased stress of forced induction, high RPM, or heavy-duty applications without compromising structural integrity.

One of the standout features of this crankshaft is its **robust rod journal design**, which is optimized for **high torque and horsepower demands**, making it an ideal choice for engines running **nitrous oxide, turbocharging, or aggressive camshafts**. The **counterweights** are strategically balanced to minimize vibration, reducing wear on the engine s supporting components, such as the rods, bearings, and block. Additionally, the **crankshaft s fillets and transitions** are reinforced to prevent stress concentrations, further improving longevity under extreme conditions.

For those seeking **maximum performance and reliability**, the **Eagle Specialty Products 6458** is a **drop-in replacement** that requires no modifications to the engine block or rod bearings, making installation straightforward for both professional mechanics and DIY enthusiasts. Whether you're restoring a classic **Chevy 454** for drag racing, building a **high-torque towing monster**, or simply upgrading an aging engine for modern performance demands, this crankshaft provides the **strength, precision, and endurance** needed to push your big block to its limits.

Built to **exceed OEM standards**, the **Eagle Specialty Products 6458** is a **trusted name in performance crankshafts**, known for its **consistent quality and performance-enhancing design**. Whether you're running a **stock-style engine** or a **highly modified powerplant**, this crankshaft ensures that your **7.4L Chevy V8** will deliver **reliable power, smooth operation, and the durability** required for serious driving or racing. Upgrade to Eagle Specialty Products and experience the difference in **performance, longevity, and peace of mind** that comes with a **premium, forged cast steel crankshaft**.

### **Pros and Cons of buying a Eagle Specialty Products 6458 Crankshaft (91-95/96-00 Chevy V8 7.4L/454 Big Block Cast Steel Crankshaft, Part #11235607)**

1. **High-Quality Cast Steel Construction** Eagle Specialty Products is known for producing durable, high-performance crankshafts designed to withstand heavy loads and high RPMs. Cast steel offers a good balance of strength and weight, making it suitable for both street and light-duty performance applications.

2. **Proven Compatibility** This crankshaft is specifically engineered for the **91-95 (pre-1996) and 96-00 (post-1996) Chevy 7.4L/454 big-block engines**. It should fit without major modifications, though always verify bolt patterns, rod journal spacing, and main journal dimensions with your engine s specifications.

3. **Balanced for Performance** Eagle cranks are often dynamically balanced to reduce vibration, which can improve drivability and longevity, especially in high-performance or modified engines.

4. **Warranty and Reputation** Eagle Specialty Products has a strong reputation in the aftermarket for reliability. Their products typically come with a warranty (check the specific terms), providing peace of mind against defects.

5. **Cost-Effective Upgrade** Compared to forged cranks, this cast steel option is more affordable while still offering significant durability improvements over an OEM crank that may have been worn or damaged.

6. **Easy Installation** Since it s a direct replacement part, installation is straightforward if you have the necessary tools and experience. No major machining or custom fitting is usually required.

7. **Supports Engine Reliability** If your engine has signs of crankshaft wear (oil consumption, rod knock, or blue smoke), replacing it with a new Eagle crank can restore power and prevent catastrophic failure.

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1. **Not Forged** While cast steel is strong, it is not as durable as a forged crankshaft. Forged cranks can handle extreme power levels, high RPMs, and aggressive modifications better. If you plan to build a high-horsepower engine (e.g., 600 HP), a forged crank may be a better long-term investment.

2. **Weight Consideration** Cast steel cranks are heavier than forged ones, which can slightly reduce engine responsiveness, especially in high-revving applications. However, the difference is minimal for most street and light-duty builds.

3. **Potential for Resale Value** Forged cranks hold higher resale value in the aftermarket, particularly for extreme builds. A cast steel crank may not be as desirable if you plan to sell the engine later.

4. **Machining May Still Be Needed** While this crank is designed for direct fit, some engines may require minor machining (e.g., main or rod journal resizing) if there s excessive wear in the block or bearings. Always inspect the block and bearings before installation.

5. **Limited Customization** Unlike forged cranks, which can be custom-machined for specific applications, cast steel cranks are typically standard designs. If you need non-standard dimensions (e.g., longer stroke), you ll need a custom forged crank.

6. **Potential for Defects** While rare, any aftermarket part can have manufacturing defects. Always inspect the crank for cracks, porosity, or casting imperfections before installation.

7. **Installation Risk Without Experience** If you re not familiar with engine rebuilds, installing a crankshaft requires precision. Improper installation (e.g., incorrect bearing clearances, improper torque) can lead to premature failure.

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The **Eagle Specialty Products 6458 crankshaft (Part #11235607)** is an excellent **cost-effective, high-quality replacement** for the **91-95/96-00 Chevy 7.4L/454 big-block engine**. It offers significant improvements over an OEM crank in terms of durability and performance while remaining affordable. It is well-suited for **street applications, light-duty performance builds, and restorations** where a forged crank is unnecessary.

However, if you re planning a **high-horsepower build (500 HP), extreme modifications, or a long-term race engine**, a **forged crankshaft** would be the better choice due to its superior strength and customizability. For most **moderate power applications**, the Eagle crank provides an excellent balance of reliability and value.

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- You need a **direct replacement** for a worn or damaged OEM crank.

- Your build is **street-focused or light-duty performance** (300-500 HP).

- You want a **durable, balanced crank** without the cost of a forged option.

- You re on a **budget** but still want an upgrade over stock.

- You re building a **high-horsepower engine (500 HP)** or plan for future power increases.

- You want **maximum durability and customization** (e.g., longer stroke, custom balancing).

- You re running the engine in **aggressive racing or extreme conditions** (e.g., drag racing, high-RPM applications).

- **Inspect your block and bearings** Ensure they re in good condition before installing a new crank.

- **Check for counterweights** Some aftermarket cranks have modified counterweights for better balance.

- **Verify rod journal spacing** Some 454 engines (especially later models) may require a **7.000" rod journal** crank; confirm compatibility.

- **Consider a full engine rebuild** If you re replacing the crank, it s often wise to update other components (rods, bearings, seals) for long-term reliability.

- **Get it professionally installed** If you re not experienced with engine work, have a trusted mechanic install it to avoid mistakes.

**Final Verdict:** For the average **Chevy 454 owner looking for a reliable, affordable crankshaft upgrade**, the **Eagle 6458 is an excellent choice**. However, if you re pushing the engine to extreme limits, a forged crank is the safer long-term investment.

Details:

Item Brand: Eagle Specialty Prod. This listing is for Eagle 91-95/96-00 Chevy V8 7.4L/454 Big Block Cast Steel Crankshaft Part #104564000Brand new condition never installed Please refer to photo more details as they are the best part of. Item MPN: 6458.

part #: 6458 price

• $103.90

specifications cranshafengin:

• for models: 454
• for makes: Chevy, Eagle
• brand: Eagle Specialty Prod
• mpn: 6458
• part type: Block Crankshaft

seller cranshafengin:

• city: Cass City, Michigan
• rating: 99.7%
• # reviews: 316188

payments cranshafengin:

• other
• wallet: Google-pay
• credit card: Mastercard

offer cranshafengin:

• availability: In Stock
• options: Ship-to-home
• quantity: 1
• started: February 7, 2026
• sold: 0

shipping cranshafengin:

• transit: 4-7 Days
• type: Fixed
• service: Economy, FedEx Ground Economy
• cost: $0.00
• carrier: FedEx
• class: Economy

general cranshafengin:

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

returns cranshafengin:

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

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