- THIS IS AN ANNOUNCEMENT
Explore 5.7L Hemi Models Performance Packages from National Speed, located in Wilmington, NC.
These packages use no power adder such as supercharger, turbocharger, or nitrous, and instead are designed to increase the engine's performance by improving efficiency.
Up to +25hp*
Up to +45hp*
Up to +90hp*
These packages use superchargers (often referred to as "blowers") and other supporting modifications to significantly increase performance by safely forcing compressed air into the engine.
Up to +150hp*
Up to +160hp*
These packages use no power adder such as supercharger, turbocharger, or nitrous, and instead are designed to increase the engine's performance by improving efficiency.
Up to +25hp*
Up to +45hp*
Up to +90hp*
These packages use superchargers (often referred to as "blowers") and other supporting modifications to significantly increase performance by safely forcing compressed air into the engine.
Up to +150hp*
Up to +160hp*
At National Speed, we believe performance upgrades should come with confidence. Every installation is completed by experienced technicians who take pride in doing the job correctly, protecting your vehicle throughout the entire process, and delivering results that meet the expectations we set together from day one.
Performance upgrades require more than just parts. They require experience, precision, and a shop that stands behind its work. That’s why customers choose National Speed.
Every calibration is developed and verified on our DynoJet chassis dyno — ensuring measurable, repeatable results.
