A Hellcat produces 11.6 psi of boost.
The supercharged 6.2L HEMI V8 engine in Hellcat models generates 11.6 pounds per square inch (psi) of boost pressure. This forced induction system, combined with a 2.4L supercharger, helps produce the impressive 707 horsepower output.
Boost pressure comparison across Hellcat models
| Model | Boost Pressure | Supercharger Size |
|---|---|---|
| Challenger SRT Hellcat | 11.6 psi | 2.4L |
| Challenger SRT Hellcat Redeye | 11.6 psi | 2.7L |
| Challenger SRT Super Stock | 11.6 psi | 2.7L |
How boost pressure affects Hellcat performance
- Higher boost pressure increases horsepower output
- 11.6 psi provides optimal balance of power and reliability
- Supercharger spins up to 15,000 RPM at full boost
- Intercooler system maintains intake air temperatures
Boost pressure monitoring and control
The Hellcat's engine management system continuously monitors boost pressure through multiple sensors. The powertrain control module adjusts fuel delivery and ignition timing based on boost levels to maintain optimal performance and protect engine components from excessive pressure.