If you’re in the market for a new flywheel, you may have come across the terms 153 and 168 tooth flywheel. But what exactly do these numbers mean? And which one should you choose? In this article, we’ll dive deep into the difference between 153 and 168 tooth flywheel and help you make an informed decision.
Contents
What is a Flywheel?
A flywheel is a mechanical device that stores rotational energy. It’s typically used in engines to smooth out the power delivery and reduce vibrations. The flywheel is attached to the engine’s crankshaft and rotates at the same speed as the engine.
When the engine produces excess energy, the flywheel stores it. Then, when the engine needs more energy, the flywheel releases that stored energy to help power the engine.
What is a 153 Tooth Flywheel?
A 153 tooth flywheel refers to the number of teeth on the ring gear of the flywheel. This type of flywheel is commonly found in small-block Chevy engines, and it’s often used in high-performance applications. The 153 tooth flywheel has a diameter of approximately 12.85 inches and a pitch diameter of 12.25 inches.
Key Features of a 153 Tooth Flywheel
Compact size: The 153 tooth flywheel is smaller in size than the 168 tooth flywheel, making it ideal for applications where space is limited.
Lightweight: Due to its smaller size, the 153 tooth flywheel is also lighter than the 168 tooth flywheel, which can improve the engine’s overall performance.
High-performance: The 153 tooth flywheel is often used in high-performance applications, as it can handle more torque and horsepower than the 168 tooth flywheel.
Pros
- Provides faster acceleration.
- Is lighter and easier to install.
- Fits smaller bellhousing.
- Uses a smaller starter motor, which can save on weight and space.
- Generally more affordable.
Cons
- Has less rotational mass, which can lead to a decrease in torque.
- Is not suitable for heavy-duty applications.
What is a 168 Tooth Flywheel?
A 168 tooth flywheel is another type of flywheel commonly found in Chevy engines. As the name suggests, it has 168 teeth on its ring gear, with a diameter of approximately 14 inches and a pitch diameter of 13.25 inches.
Key Features of a 168 Tooth Flywheel
Heavy-duty: The 168 tooth flywheel is larger and heavier than the 153 tooth flywheel, making it ideal for heavy-duty applications.
Wide availability: Since the 168 tooth flywheel is more commonly used in Chevy engines, it’s easier to find and purchase.
Smooth operation: The larger size of the 168 tooth flywheel provides smoother operation, as it has more mass to store and release energy.
Pros
- Provides more torque.
- Is suitable for heavy-duty applications.
- Has more rotational mass, which can help to smooth out power delivery.
- Works well with larger bellhousing.
Cons
- Is heavier and more difficult to install.
- Requires a larger bellhousing and starter motor, which can add weight and take up more space.
- Generally more expensive than a 153 tooth flywheel.
Comparison Table: Difference between 153 and 168 Tooth Flywheel
Here is a comparison table of 153 vs 168 tooth starter:
| Feature | 153 Tooth Flywheel | 168 Tooth Flywheel |
| Diameter | Smaller | Larger |
| Weight | Lighter | Heavier |
| Bellhousing Size | Smaller | Larger |
| Starter Motor Size | Smaller | Larger |
| Clutch Size | 10.5-inch | 11-inch |
| Rotational Mass | Less | More |
| Suitable Applications | Small Block Engines | Big Block Engines |
| Price | Generally More | Generally More |
Difference between 153 and 168 Tooth Flywheel: Which is Best?
If you’re looking for a flywheel for high-performance applications and have limited space, the 153 tooth flywheel may be the best choice for you. On the other hand, if you need a flywheel for heavy-duty applications and want smoother operation, the 168 tooth flywheel may be the better option. Keep in mind that the 168 tooth flywheel is more expensive than the 153 tooth flywheel, so cost may also be a factor to consider.
Frequently Asked Questions
Here are some FAQs about 153 vs 168 tooth starter –
Q: Can I use a 168 tooth flywheel in place of a 153 tooth flywheel?
A: It depends on the specific engine and transmission you have. Some engines may be compatible with both types of flywheels, while others may only be compatible with one.
Q: How do I know which type of flywheel to choose?
A: Consider the specific needs of your application, including the engine size, power output, and available space. You can also consult with a mechanic or automotive expert for guidance.
Q: Does the size of the flywheel affect the engine’s performance?
A: Yes, the size of the flywheel can impact the engine’s performance. A larger flywheel can provide smoother operation and handle more torque, while a smaller flywheel may improve the engine’s responsiveness and acceleration.
Q: Can a flywheel fail?
A: Yes, a flywheel can fail if it becomes damaged or worn over time. Common signs of a failing flywheel include unusual noises, difficulty shifting gears, and engine vibrations.
Conclusion
The 153 tooth flywheel is smaller, lighter, and more suitable for high-performance applications where space is limited. Meanwhile, the 168 tooth flywheel is larger, heavier, and better suited for heavy-duty applications where smoother operation is desired.
When making your decision, consider factors such as engine size, power output, available space, and budget. Additionally, consulting with a mechanic or automotive expert can provide valuable guidance and ensure that you make the best choice for your particular application.
Thank you for reading this in-depth article on the difference between 153 and 168 tooth flywheel. We hope that it has been informative and helpful in making an informed decision for your engine needs.