How to Increase Boost on a 6.4 with a Hellcat Supercharger

TLDRLearn how to increase boost on a 6.4 engine with a Hellcat supercharger by swapping the upper pulley to a Hellraiser and adding 5 pounds of boost. The 6.4 engine can handle the extra boost with forged pistons, but stock engines can still perform well with the stock pulley. For more boost, change the pulley to a 272. Fuel requirements are similar to the Hellcat with the 272 pulley, and a booster pump and stock injectors are sufficient for fuel supply.

Key insights

💪Swapping the upper pulley to a Hellraiser and adding 5 pounds of boost can increase the 6.4 engine's performance.

⏫Changing the pulley to a 272 can further increase boost to around 11 pounds.

⛽Fuel requirements for the 6.4 engine with a 272 pulley are similar to the Hellcat.

🚗Stock engines can handle the boost from the Hellcat supercharger with the stock pulley.

🔧Tuning by Hemi Fever can optimize the performance of the 6.4 engine with increased boost.

Q&A

Can a stock 6.4 engine handle the boost from a Hellcat supercharger?

—Yes, a stock 6.4 engine can handle the boost from a Hellcat supercharger. The stock pulley is designed to handle around 6 pounds of boost, which is within the safe range for the engine.

How can I increase the boost on a 6.4 engine?

—To increase the boost on a 6.4 engine, you can swap the upper pulley to a Hellraiser and add 5 pounds of boost. This will increase the total boost to around 11 pounds.

What are the fuel requirements for a 6.4 engine with increased boost?

—The fuel requirements for a 6.4 engine with increased boost, such as with a 272 pulley, are similar to those of a Hellcat. However, with the proper fuel injectors and a booster pump, the stock fuel supply is sufficient.

Do I need to upgrade the fuel injectors for increased boost on a 6.4 engine?

—If you are running a 272 pulley on a 6.4 engine, it is recommended to upgrade the fuel injectors due to the increased fuel demand. However, if you are using the stock pulley, the stock injectors should be sufficient.

Is tuning necessary for increased boost on a 6.4 engine?

—Tuning can optimize the performance of a 6.4 engine with increased boost. Professional tuning, such as by Hemi Fever, can ensure that the engine runs smoothly and safely with the added boost.

Timestamped Summary

00:01Learn how to increase boost on a 6.4 engine with a Hellcat supercharger.

00:08The stock 6.4 engine can handle around 6 pounds of boost with the supercharger.

00:32Swapping the upper pulley to a Hellraiser adds 5 pounds of boost to the 6.4 engine.

01:00Changing the pulley to a 272 increases the total boost to around 11 pounds.

01:49The 6.4 engine with a 272 pulley has similar fuel requirements to a Hellcat.

02:59Upgrading fuel injectors is recommended for a 272 pulley on a 6.4 engine.

03:08Tuning by Hemi Fever can optimize the performance of the 6.4 engine with increased boost.

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