Home Cars Video: 5th Gear tests the Dodge Challenger SRT-8 By Terence Published Jun 28, 2009 add iframe code inside nonscript tag for crwaler Dodge Challenger SRT-8 out for a ride. The SRT-8 is set apart from standard Challengers by its 6.1 Liter V8 with hemispherical combustion chambers that allow the modern muscle car to make 426 HP and go from 0 to 60 MPH in only 5.5 seconds. .