SCAT 435050 Standard Steel Crankshaft 846091011637 4340

( Brand: Scat ), ( Manufacturer Part Number: 435050 ), ( Part Type: Crankshaft ), ( UPC: 846091011637 )

Review SCAT Standard Weight 4340 Steel Crankshaft

The **SCAT 435050 Standard 4340 Steel Crankshaft** is a precision-engineered component designed to deliver exceptional performance, durability, and reliability in high-stress, high-revving applications, making it an ideal choice for serious engine builders, drag racers, and performance enthusiasts. Crafted from **AISI 4340 alloy steel**, this crankshaft is renowned for its superior strength-to-weight ratio, exceptional fatigue resistance, and ability to withstand extreme loads without compromising structural integrity. The 4340 steel composition, which includes carefully balanced levels of nickel, chromium, and molybdenum, ensures a fine grain structure that enhances toughness while maintaining hardness, making it well-suited for demanding environments where reliability is paramount. The crankshaft s design adheres to SCAT s rigorous standards, featuring **fully counterweighted main journals** and **precision-machined rod journals** to minimize vibration and maximize smoothness, even under heavy loads or at elevated RPMs. Each journal is meticulously ground to tight tolerances, ensuring optimal bearing clearance and longevity, while the **fully balanced** configuration eliminates harmful harmonics that could lead to premature wear or failure. The **standard rod journal diameter** of 2.000 inches (50.80 mm) and **main journal diameter** of 2.500 inches (63.50 mm) provide a robust foundation for high-performance engines, whether in a street rod, drag car, or competition application. Available in a **polished finish**, the crankshaft not only enhances aesthetic appeal but also ensures a clean, corrosion-resistant surface that contributes to smoother operation and easier installation. Whether paired with a high-performance camshaft, forged connecting rods, or a turbocharged engine, the SCAT 435050 crankshaft delivers the strength and precision needed to push an engine to its limits without sacrificing durability. Built to withstand the rigors of extreme power output, this crankshaft is a testament to SCAT s commitment to quality, making it a trusted choice for those seeking a balance of performance and longevity in their engine builds.

### Pros and Cons of Buying a SCAT 435050 Standard 4340 Steel Crankshaft (Part Number: 435050)

1. **High-Quality Material** The crankshaft is forged from **4340 steel**, a premium alloy known for its strength, durability, and resistance to fatigue. This material is commonly used in high-performance and racing applications due to its ability to withstand extreme stress without deforming.

2. **Precision Engineering** SCAT (a division of **Crane Cams**) is well-regarded for producing high-quality, precision-machined components. The crankshaft is likely to have tight tolerances, ensuring smooth operation and longevity.

3. **Compatibility with Performance Engines** The **435050** model is designed for specific engine applications, such as **Chevrolet small-block engines (e.g., 350, 396, 427, 454)** and other high-performance setups. It is often used in **big-block and small-block builds**, including those with forced induction (turbo/supercharged).

4. **Balanced and Polished** A properly balanced crankshaft reduces vibration, improving engine smoothness and longevity. SCAT cranks are typically **static and dynamic balanced**, which helps prevent premature wear on bearings and other components.

5. **Warranty and Support** SCAT products often come with warranties, and the company provides technical support for installation and compatibility. This can be reassuring for buyers who want assurance in their purchase.

6. **Aftermarket Reputation** SCAT is a trusted name in the aftermarket performance industry, known for reliability in both stock and modified engines. Many racers and tuners rely on their components for durability.

7. **Customization Options** Depending on the application, SCAT may offer variations in journal sizes, stroke lengths, or counterweight configurations to match specific engine builds.

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1. **Cost** High-performance crankshafts like this one are **expensive**, often costing **$1,000 $3,000 **, depending on the engine application and additional machining requirements. This can be a significant investment compared to OEM or budget aftermarket options.

2. **Installation Complexity** Replacing a crankshaft requires **disassembly of the entire engine**, including removal of the pistons, rods, and main bearings. This is a **labor-intensive job** that may require professional help, adding to the total cost.

3. **Compatibility Issues** While SCAT cranks are designed for specific engines, **misapplication** (e.g., using a crank meant for a small-block in a big-block without proper modifications) can lead to **clearance problems, bearing failure, or other issues**. Always verify compatibility with your engine s block and rod journal sizes.

4. **Additional Machining May Be Needed** Some engines may require **custom grinding or balancing** to ensure perfect fitment, which can add extra cost and time.

5. **Potential for Overkill** If your engine is **not heavily modified or stress-loaded** (e.g., a stock or mildly built engine), a **4340 steel crankshaft may be unnecessary**. A **forged steel OEM crank or a lower-tier aftermarket option** might suffice, saving money without sacrificing reliability.

6. **Weight Considerations** While 4340 steel is strong, it is **heavier than some aluminum or lighter steel cranks**. In high-RPM applications (e.g., drag racing), this added weight can slightly reduce **redline potential** unless the engine is tuned accordingly.

7. **Risk of Damage During Installation** If not handled carefully, the crankshaft can be **bent or scratched**, especially during piston removal or installation. Proper tools and techniques are essential to avoid this.

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### **Conclusion**

A **SCAT 435050 4340 steel crankshaft** is an **excellent choice** for **high-performance, stress-loaded, or heavily modified engines**, particularly in **racing, forced induction, or high-RPM applications**. Its **superior material, precision machining, and reputation for durability** make it a **premium upgrade** for serious builders.

However, it is **not a necessary upgrade** for **stock or lightly modified engines**, where a **budget-friendly forged steel crank or even an OEM replacement** may be sufficient. The **high cost, installation complexity, and potential for misapplication** mean that this crank is best suited for **enthusiasts with specific performance goals** who are willing to invest in long-term reliability.

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### **Recommendation**

- You are building a **high-performance engine** (e.g., **big-block, turbocharged, supercharged, or drag racing**).

- Your engine will operate under **extreme stress** (high RPM, boost, or aggressive tuning).

- You want **maximum durability and a proven aftermarket component**.

- You are working with a **trusted mechanic** who can ensure proper installation and balancing.

- Your engine is **stock or mildly modified** a **forged steel OEM crank or a lower-cost aftermarket option** may be adequate.

- You are on a **tight budget** explore **used or refurbished cranks** from reputable sources.

- You are unsure about **compatibility** consult with an **engine builder or tuner** before purchasing.

**Final Verdict:** For **serious performance builds**, the SCAT 435050 is a **strong, reliable investment**. For **casual or stock builds**, it may be **overkill**. Always **verify compatibility** and **plan for professional installation** to maximize its benefits.

Details:

American Express. Scat 435050 Standard Weight 4340 Steel Crankshaft, Crankshaft Chevy Small Block350 Main Journals2-Piece Rear Seal3.750'' Stroke for use with 5.700'' Rod2.100 Rod Pin Diameter Internal Balance52 lbs.

part #: 435050 prices

• $899.00-$987.99

specifications cranshafengin:

• brand: Scat
• mpn: 435050
• part type: Crankshaft
• upc: 846091011637

general cranshafengin:

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

offer cranshafengin:

• sold: 0
• quantity: 10
• availability: In Stock
• started: February 12, 2026
• options: Ship-to-home

payments cranshafengin:

• other
• credit card: Discover
• wallet: Apple-pay

seller cranshafengin:

• city: , Ohio
• # reviews: 616246
• rating: 99.1%

returns cranshafengin:

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

shipping cranshafengin:

• transit: 5-9 Days
• type: Fixed
• service: Standard
• cost: $0.00
• class: Standard

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