Step-by-step Guide to Building a 750 Hp Dodge Challenger 6.2 Hellcat with Pulley Upgrades and Exhaust Systems

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The Dodge Challenger 6.2 Hellcat is a powerful muscle car known for its impressive performance and aggressive styling. For those looking to enhance their Hellcat’s power output to 750 horsepower, this guide provides a step-by-step approach, focusing on pulley upgrades and exhaust systems.

Understanding the Dodge Challenger 6.2 Hellcat

The Dodge Challenger 6.2 Hellcat is equipped with a supercharged HEMI V8 engine that produces an astonishing amount of power. To achieve 750 horsepower, modifications are necessary, particularly involving the supercharger’s pulley system and the exhaust system.

Step 1: Assessing Your Current Setup

Before making any upgrades, it is crucial to evaluate your current engine setup. Knowing your baseline performance will help you understand the improvements made after the modifications.

Step 2: Choosing the Right Pulley Upgrade

Upgrading the supercharger pulley is one of the most effective ways to increase horsepower. A smaller pulley increases the supercharger’s RPM, leading to greater boost pressure.

  • Research various pulley sizes available for the Hellcat.
  • Choose a pulley that balances performance with reliability.
  • 2.75-inch Pulley: Provides significant boost increase.
  • 2.65-inch Pulley: Optimal for those seeking maximum power.

Step 3: Installing the Pulley Upgrade

Once you have selected the appropriate pulley, follow these installation steps:

  • Gather necessary tools: socket set, torque wrench, and pulley removal tool.
  • Disconnect the battery to ensure safety.
  • Remove the supercharger belt by releasing tension.
  • Use the pulley removal tool to take off the stock pulley.
  • Install the new pulley, ensuring it is properly aligned.
  • Reattach the supercharger belt and reconnect the battery.

Step 4: Upgrading the Exhaust System

An upgraded exhaust system allows for better airflow, which is essential for maximizing the performance of your Hellcat after pulley upgrades.

  • Choose between cat-back exhaust systems or headers.
  • Consider materials: stainless steel offers durability and performance.
  • Cat-Back Exhaust System: Enhances sound and performance.
  • Long Tube Headers: Increases horsepower by improving exhaust flow.

Step 5: Installing the Exhaust System

Follow these steps to install your new exhaust system:

  • Lift the vehicle securely using jack stands.
  • Remove the old exhaust system, starting from the rear.
  • Install the new exhaust components, ensuring proper alignment.
  • Secure all connections and check for leaks.

Step 6: Tuning the Engine

After completing the hardware upgrades, tuning the engine is essential to maximize performance and ensure reliability.

  • Use a performance tuner to adjust the engine parameters.
  • Monitor air-fuel ratios and timing for optimal performance.

Step 7: Testing Your Upgrades

After installation and tuning, it’s time to test your upgraded Dodge Challenger Hellcat.

  • Take the car for a test drive to assess performance.
  • Consider using a dynamometer to measure horsepower and torque.

Conclusion

Building a 750 HP Dodge Challenger 6.2 Hellcat involves careful planning and execution. By following these steps, including pulley upgrades and exhaust system enhancements, you can achieve significant performance improvements while enjoying the thrill of driving one of the most powerful muscle cars on the road.