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The Dodge Challenger Hellcat is a beast of a car, known for its raw power and aggressive styling. For those enthusiasts looking to push the limits even further, building a 900 horsepower Hellcat is an exciting challenge. This guide will walk you through the essential turbocharger and internal upgrades necessary to achieve that goal.
Understanding the Basics of the Hellcat Engine
The Hellcat engine is a supercharged 6.2-liter HEMI V8, producing a staggering 707 horsepower in its stock form. To reach 900 horsepower, we need to focus on both forced induction and internal modifications.
Choosing the Right Turbocharger
Turbocharging the Hellcat engine can significantly increase horsepower. Here are some key factors to consider when selecting a turbocharger:
- Size: A larger turbo can provide more power but may introduce lag.
- Type: Consider twin-turbo setups for better throttle response.
- Brand: Popular brands include Garrett, BorgWarner, and Precision Turbo.
Recommended Turbochargers for Hellcat
- Garrett GTX3582R
- BorgWarner EFR 7670
- Precision 6766
Internal Engine Upgrades
To support the increased power from the turbocharger, internal engine upgrades are crucial. Here’s a list of recommended modifications:
- Pistons: Upgrade to forged pistons for better strength.
- Connecting Rods: Use high-performance rods to handle increased stress.
- Cylinder Heads: Porting and polishing can improve airflow.
- Camshaft: A performance camshaft can increase power and efficiency.
Choosing the Right Pistons and Rods
When selecting pistons and rods, consider the following:
- Material: Look for forged aluminum for pistons and forged steel for rods.
- Compression Ratio: Maintain a balance for optimal performance.
Supporting Modifications
In addition to turbocharging and internal upgrades, several supporting modifications will enhance performance:
- Fuel System: Upgrade injectors and fuel pumps to support increased fuel demands.
- Exhaust System: A high-flow exhaust will reduce back pressure.
- Cooling System: Consider a larger intercooler to manage increased heat.
Fuel System Upgrades
To ensure your Hellcat runs smoothly at higher power levels, upgrading the fuel system is essential:
- Fuel Injectors: Upgrade to high-flow injectors for better fuel delivery.
- Fuel Pump: A higher capacity pump will ensure adequate fuel supply.
Tuning Your Hellcat
After all modifications, proper tuning is necessary to maximize performance and reliability. A professional tuner can adjust the engine’s parameters to accommodate the new turbocharger and internal upgrades.
Choosing a Tuner
When selecting a tuner, consider their experience with high-performance builds and specific knowledge of the Hellcat platform.
Conclusion
Building a 900 horsepower Dodge Challenger Hellcat is an ambitious yet rewarding project. By carefully selecting a turbocharger, upgrading internal components, and ensuring proper tuning, you can unlock the full potential of this iconic muscle car.