Depends on year and trim level...
The Dodge Challenger Hellcat as 707 horsepower.
250
Horsepower TV - 2006 Twin Turbo Dodge Challenger was released on: USA: April 2010
400 horsepower
Depends on engine
425
The 2011 Dodge Challenger's engine produces 305 hp @ 6350 rpm.
The 2008 Dodge Challenger's engine produces 425 hp @ 6200 rpm.
The 2010 Dodge Challenger's engine produces 250 hp @ 6400 rpm.
The 2014 Dodge Challenger's engine produces 305 hp @ 6350 rpm.
The 2009 Dodge Challenger's engine produces 250 hp @ 6400 rpm.
The 2012 Dodge Challenger's engine produces 305 hp @ 6350 rpm.