fits model: G8, Corvette. make: Pontiac.

( Brand: Ati Performance ), ( Manufacturer Part Number: 916032H2 ), ( Part Type: Crank Hub ), ( Performance Part: Yes )
The **ATI Performance 916032H2 Steel LS Corvette/Pontiac G8 Crank Hub** is a meticulously engineered, high-performance component designed to elevate the drivetrain efficiency and reliability of your LS-based engine applications, particularly tailored for the iconic Chevrolet Corvette and Pontiac G8 platforms. Crafted from premium **4140 chromoly steel**, this crank hub is forged to exacting standards, ensuring superior strength, durability, and resistance to fatigue under extreme loads and high RPM conditions. The precision-machined design incorporates a **smooth, polished bore** that minimizes friction and wear, allowing for optimal crankshaft alignment and reduced vibration, which translates to improved engine performance and longevity. Engineered with a **split-bore configuration**, this crank hub is compatible with a wide range of LS-series crankshafts, including those from the **LS1, LS2, LS3, LS7, and L96** families, making it a versatile upgrade for both stock and modified engines. The hub features a **hardened and ground interface**, ensuring a secure and consistent fit with your crankshaft, while the **integrated oil passage** promotes even lubrication, reducing the risk of premature wear on critical components. Whether you're pushing your engine for high-performance street use, drag racing, or track applications, this crank hub delivers the robustness and precision needed to handle the demands of aggressive driving. Backed by ATI Performance s reputation for quality and innovation, this component is a testament to the brand s commitment to providing aftermarket solutions that enhance both power and reliability.
The **ATI Performance 916032H2 crank hub** (steel, designed for LS-based engines like the Corvette or Pontiac G8) is a popular aftermarket part for those looking to improve drivetrain durability and performance. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.
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### **Pros of the ATI Performance 916032H2 Crank Hub**
1. **Enhanced Durability and Strength**
The crank hub is forged from high-quality steel, which is significantly stronger than the stock cast-iron or aluminum components in many LS engines. This reduces the risk of catastrophic failure, especially under high torque or aggressive driving conditions. The design distributes stress more evenly across the crankshaft, improving longevity in high-performance applications.
2. **Better Weight Distribution**
The crank hub s design helps balance the crankshaft more effectively, reducing vibrations and improving smoothness particularly noticeable in high-RPM applications. This can lead to a more refined driving experience and reduced wear on related components like bearings and rods.
4. **Compatibility with High-Performance Engines**
The part is designed to work well with turbocharged, supercharged, or naturally aspirated LS engines that produce above stock torque levels. It is commonly used in builds pushing 600 800 horsepower, where stock components may fail prematurely.
5. **Easy Installation**
ATI Performance parts are known for their straightforward installation process. The crank hub bolts onto the crankshaft using standard tools, and no major disassembly is required beyond what s needed for a typical engine rebuild. ATI provides clear instructions and often includes gaskets or seals to simplify the job.
6. **Cost-Effective Upgrade**
Compared to a full crankshaft replacement or a custom-built crank, the crank hub is a relatively affordable upgrade. It offers a significant performance boost without the expense of a full engine rebuild.
7. **Proven Reliability**
ATI Performance has a strong reputation in the aftermarket for producing durable, high-quality parts. The 916032H2 has been widely used and tested by enthusiasts, with many reporting reliable performance over extended periods.
8. **Reduced Risk of Rod Bearing Failure**
By improving crankshaft rigidity and balance, the hub helps prevent rod bearing wear, which is a common failure point in high-torque applications. This can extend the life of the entire drivetrain.
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### **Cons of the ATI Performance 916032H2 Crank Hub**
1. **Not a Complete Crankshaft Replacement**
The crank hub is an add-on component that attaches to the existing crankshaft. While it significantly improves strength, it does not address other potential weaknesses in the crank, such as journal wear or counterbalance issues. If the crankshaft itself is worn or damaged, the hub will not compensate for those problems.
2. **Requires Proper Installation**
Improper installation such as incorrect torque specifications, misalignment, or failure to use the provided hardware can negate the benefits of the hub and even cause damage. This is why it s critical to follow ATI s instructions carefully or have a professional install it.
3. **Limited to LS-Based Engines**
The hub is specifically designed for LS-series engines (e.g., LS1, LS2, LS3, LS7, etc.). It will not fit other engine platforms, which may limit its usefulness for non-LS applications.
4. **Potential for Overkill in Mild Builds**
If the engine is only producing stock or slightly above-stock power (e.g., 400 500 hp), the crank hub may be unnecessary. In such cases, the cost and complexity of the upgrade might not justify the benefits.
5. **No Guarantee Against Other Failure Points**
While the crank hub improves crankshaft strength, it does not protect against failures in other critical components like connecting rods, pistons, or the block itself. A full engine rebuild or upgrade may still be needed for extreme power levels.
6. **Weight Consideration**
While the hub improves balance, the added steel can slightly increase the overall weight of the crankshaft. In high-RPM applications, this may have a negligible effect, but it s worth noting for those prioritizing lightweight components.
7. **Aftermarket Dependency**
Since this is an aftermarket part, availability and support may vary depending on the region. Some users have reported occasional delays in receiving parts or difficulty finding compatible hardware (e.g., bolts, seals).
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### **Conclusion**
The **ATI Performance 916032H2 crank hub** is an excellent upgrade for LS-based engines pushing significant power (especially 500 horsepower or higher torque applications). Its primary strengths lie in durability, vibration reduction, and cost-effectiveness compared to full crankshaft replacements. However, it is not a universal fix it requires proper installation, works best in high-performance builds, and does not address other potential engine weaknesses.
For **stock or mildly modified engines**, the benefits may not outweigh the cost. For **high-performance builds (especially turbocharged or supercharged LS engines)**, the crank hub is a smart investment to prevent catastrophic failures and improve drivetrain longevity.
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### **Recommendation**
- **Install the ATI Performance 916032H2 crank hub if:**- Your LS engine is producing **500 horsepower or high torque** (especially with forced induction).
- You are experiencing **vibration issues, rod bearing wear, or concerns about crankshaft durability**.
- You are planning a **high-performance build** and want to future-proof your engine against failure.
- You are comfortable with **basic engine disassembly and reassembly** (or have a mechanic install it).
- **Avoid the ATI Performance 916032H2 crank hub if:**- Your engine is **stock or only mildly modified** (below 500 hp).
- You are not planning to push the engine hard in the near future.
- You are working with a **non-LS engine platform** (the hub is LS-specific).
- You are on a tight budget and cannot justify the cost for your current power levels.
For the best results, pair the crank hub with other high-performance upgrades (e.g., stronger rods, upgraded bearings, and a supporting engine rebuild) to ensure the entire drivetrain can handle the increased power. Always follow ATI s installation guidelines and consult with a trusted mechanic if unsure.
Harmonic Balance Hub - Steel Black Oxide ATI Balances GM LS-Series Each. Manufacturer: ATI PERFORMANCE. Part Number: 916032H2.