The 5.7 HEMI is one of the most recognizable and celebrated American engines ever made. It's a beast of a power plant, with up to 395 horsepower and 410 lb-ft of torque on tap — right out of the box.
On a 5.7 HEMI, shorty headers promise easy bolt-on power without turning your daily driver into a race-only project. The real question is how much horsepower they actually add compared with stock ...