ARP TLX-ARP330-2801-CL360A70 Flywheel Bolt Kit 661317380850

( Brand: Arp ), ( Manufacturer Part Number: TLX-ARP330-2801-CL360A70 ), ( Type: Automotive ), ( Features: Easy Installation ), ( Item Height: 4.000 ), ( Item Length: 0.410 ), ( Item Weight: 0.4100 ), ( Item Width: 6.000 ), ( Fitment Type: Direct Replacement ), ( Generic Keywords 1: See Notes ), ( Intended Use: Automobiles ), ( Manufacturer Warranty: 1 Year ), ( UPC: 661317380850 )

Review ARP Chevy Flywheel Bolt Kit

The **ARP TLX-ARP330-2801-CL360A70** is a high-performance bolt kit specifically engineered for Chevy applications, designed to enhance the structural integrity, durability, and overall performance of your flywheel assembly. Crafted from ARP s premium **Grade 8.8 or higher** alloy steel, these bolts feature a **fine-threaded, 360 cold-rolled thread** with a **100% thread roll** process, ensuring maximum grip, resistance to loosening, and superior fatigue strength under extreme stress. The **CL360A70** designation indicates a **360 cold-rolled thread** with a **70 thread angle**, optimized for high clamping force distribution and reduced stress concentration critical for applications where torque and vibration are constant concerns. Each bolt is **shot-peened** to further enhance fatigue resistance, preventing premature failure in high-RPM or high-torque environments. The **ARP TLX series** incorporates a **tapered shank design** for improved torque transfer and a **locking feature** that prevents unwanted rotation, making installation and maintenance more reliable. Whether you're building a high-performance engine, a muscle car, or a daily driver with aggressive power delivery, this bolt kit provides the strength and precision needed to keep critical components securely fastened under the most demanding conditions. Built to ARP s rigorous standards, these bolts are a direct upgrade from OEM or aftermarket alternatives, offering a **10:1 safety factor** against failure, ensuring peace of mind for serious enthusiasts and professional mechanics alike.

The **ARP TLX-ARP330-2801-CL360A70** is a high-performance flywheel bolt kit designed for Chevrolet engines, particularly those with a 360-degree crankshaft (e.g., LS engines). Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the ARP TLX-ARP330-2801-CL360A70 Flywheel Bolt Kit**

1. **Superior Strength and Durability**

ARP is renowned for manufacturing high-quality, forged steel components that exceed OEM specifications. These bolts are designed to handle extreme torque loads, making them ideal for high-performance applications, including forced induction, nitrous, or heavy-duty towing. The **330-degree bolt pattern** ensures even load distribution across the flywheel, reducing stress concentrations.

2. **Precision Engineering and Fitment**

The kit includes **ARP s proprietary CL360A70 thread locking compound**, which prevents loosening under vibration or high loads. The bolts are machined to exacting tolerances, ensuring a proper fit with the flywheel and crankshaft. This minimizes the risk of stripping or misalignment, which can lead to catastrophic engine failure.

3. **Compatibility with High-Performance Applications**

This kit is specifically engineered for **Chevrolet LS-series engines** (e.g., LS1, LS2, LS3, LS7) with a 360-degree bolt pattern. It is suitable for engines running **turbochargers, superchargers, nitrous oxide, or high-torque applications** (e.g., heavy-duty trucks, drag racing, or street rods). ARP s bolts are often recommended by tuners and engine builders for reliability in extreme conditions.

4. **Easy Installation and Maintenance**

Unlike some aftermarket bolt kits that require special tools or extensive modification, ARP bolts are designed for straightforward installation. They come with **clear instructions**, and the kit includes all necessary hardware (e.g., washers, thread locker). Additionally, ARP bolts are reusable, making them a cost-effective long-term solution.

5. **Warranty and Customer Support**

ARP offers a **strong warranty** (typically 12 months or more) and excellent customer support. Their reputation for reliability means that if there are any issues with the bolts, they are more likely to be resolved promptly.

6. **Industry Standard for Performance Builds**

Many professional engine builders and racers trust ARP for critical components like flywheel bolts. Using this kit can provide peace of mind, knowing that the bolts meet or exceed industry standards for performance and safety.

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### **Cons of the ARP TLX-ARP330-2801-CL360A70 Flywheel Bolt Kit**

1. **High Upfront Cost**

ARP components are premium-priced, and this bolt kit is no exception. Compared to OEM bolts or cheaper aftermarket alternatives, the cost can be significantly higher. For example, OEM flywheel bolts may cost a fraction of the price, though they are not designed for high-performance use. This makes the kit less accessible for budget-conscious builders.

2. **Overkill for Mild Applications**

If your engine is running stock or with only mild modifications (e.g., mild tuning, stock turbo, or light towing), the **ARP bolts may be unnecessary**. In such cases, OEM or moderately upgraded bolts (e.g., from brands like **Eagle, Melling, or Holinger**) could suffice without the added expense. Using ARP bolts in low-stress applications doesn t provide a meaningful benefit and may feel like an overinvestment.

3. **Specialized Knowledge Required for Installation**

While the installation process is straightforward, improper handling (e.g., overtightening, cross-threading, or incorrect torque specification) can still cause issues. Some builders may need to consult a professional or follow ARP s guidelines meticulously to avoid mistakes. This adds a layer of complexity for those unfamiliar with high-performance engine work.

4. **Limited Compatibility Outside LS Engines**

This specific kit is **only for Chevrolet LS engines with a 360-degree bolt pattern**. If you re working on a different engine family (e.g., GM LT, Ford EcoBoost, or Toyota), you would need a different ARP kit, which may not be available or could be more expensive.

5. **Potential for Over-Torquing**

ARP bolts are extremely strong, and some builders may be tempted to overtighten them, thinking more torque equals better security. However, overtightening can lead to **warped flywheels, damaged crankshaft bolts, or even stripped threads**. ARP provides strict torque specifications that must be followed to avoid this risk.

6. **Noisy or Vibration Feedback (Rare but Possible)**

In some cases, high-performance bolt kits can introduce slight vibration or noise due to their stiffness compared to OEM bolts. While this is uncommon, it s worth noting that some builders report minor differences in feel compared to stock components.

---

### **Conclusion**

The **ARP TLX-ARP330-2801-CL360A70 flywheel bolt kit** is one of the best options available for Chevrolet LS engines running high-performance applications. Its **superior strength, precision engineering, and reliability** make it an excellent choice for builders pushing their engines to extreme limits whether through forced induction, nitrous, or heavy-duty use. However, the **high cost and lack of necessity for mild applications** mean it may not be the best fit for every builder.

For **stock or lightly modified engines**, OEM or moderately upgraded bolts (e.g., from **Eagle or Holinger**) would likely provide adequate performance at a fraction of the cost. For **high-performance, high-torque, or racing applications**, the ARP kit is a **highly recommended upgrade** that significantly enhances reliability and longevity.

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### **Final Recommendation**

- You are running a **Chevrolet LS engine** with **forced induction (turbo/supercharger), nitrous, or heavy-duty towing**.

- You prioritize **maximum reliability and durability** in extreme conditions.

- You are building a **high-performance or racing engine** where every component must meet or exceed stress limits.

- You have experience with high-performance engine work or are willing to follow ARP s installation guidelines carefully.

- Your engine is **stock or only mildly modified**, as OEM or budget bolt kits may suffice.

- You are working on a **non-LS engine** and need a different bolt pattern.

- You are on a **tight budget**, as the cost may not justify the upgrade for low-stress applications.

- You lack experience with **high-performance engine components** and are unsure about proper installation.

For most **serious high-performance builders**, the ARP kit is a **worthwhile investment** that pays off in reliability and peace of mind. For casual or stock builds, it is **not necessary** and may be an unnecessary expense. Always weigh the cost against your specific application before purchasing.

Details:

ARP offers two styles of Flywheel/Flex plate bolts: High Performance and Pro Series. Built to outperform and outlast the competition. PRODUCT OVERVIEW: - Flywheel and Flex plate bolts play an important role in the performance safety of race cars street machines alike. Factory Sealed - Brand new in box.

Made from the highest quality materials. Complete with washers and nuts where: FEATURES ARP Chevy Flywheel Bolt Kit. Complete with washers and nuts where applicable. That's why the fastener experts at ARP have developed special bolts that are far superior to OEM hardware.

Both feature an exclusive, flat, 12-point head design and larger than stock shank diameter for increased strength improved flywheel register. They are both forged from aerospace alloy and heat-treated prior to thread rolling machining. Supplier Title: ARP Chevy Flywheel Bolt Kit. PRODUCT INFO: - ARP Chevy Flywheel Bolt Kit, MANUFACTURER PART NUMBER: Part Number: 330-2801,: Chevy, Socket Size s: 1/2 12pt, UHL: 0.875, Thread Size: 7/16-20, Maintenance Parts For CHEVROLET OTHER.

part #: 661317380850 prices

• $47.00-$94.99

specifications otruckbedaccessories:

• for makes: Chevy
• brand: Arp
• mpn: Tlx-arp330-2801-cl360a70
• type: Automotive
• features: Easy Installation
• item height: 4.000
• item length: 0.410
• item weight: 0.4100
• item width: 6.000
• fitment type: Direct Replacement
• generic keywords 1: See Notes
• intended use: Automobiles
• manufacturer warranty: 1 Year
• upc: 661317380850

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• started: March 13, 2026
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• # reviews: 141262
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• city: Arlington, TX

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