Oh, you thought the Dodge Challenger SRT® Demon was fast enough as is? Wrong! Because with the development of the 1,000-HP Mopar® Hellephant engine, the possibilities have expanded. The Hellephant is a 426 cubic-inch HEMI V8 crate motor that packs a huge punch. And when you combine that with the handling and capability of the SRT Demon, you get some impressive numbers – and sounds!