How much HP do shorty headers add to a 5.7 HEMI and what do they cost?

From torque gains to everyday drivability, shorty headers promise a lot for the 5.7 HEMI. Here's why this simple mod keeps ...
SlashGear

The Biggest Differences Between 392 And 5.7 HEMI Engines

Although the famous HEMI V8 engine is slowly getting phased out of the Stellantis lineup, the two most recently offered variations were the 5.7-liter HEMI and the 392 HEMI. The 5.7-liter V8 is ...