How do you maintain the SEMA booth traffic after you’ve launched a 707-hp Hellcat crate engine (aka Hellcrate) and teased folks for a year with the prospect of an 840-hp Demon crate engine? You leapfrog that Demon and round the number right up to an even grand. Yes, that’s 1,000 horsepower and 950 lb-ft of torque—on 93-octane pump gas!
This is not a further stretch of the beloved 6.2-liter. Nope, it’s bored and stroked to a (liberally rounded down) 426 cubic inches—the size of the fabled “Elephant Engine” second-gen Hemi that roared into the fabric of American muscle-car life from 1964-1971—hence the Hellephant nomenclature.
The SRT folks quote the bore and stroke as 4-1/8 x 4 inches (up from the Hellcat/Demon’s 4-1/11 x 3-29/50, to keep the fun fractions going). An equally important displacement change—if you’ll permit us to revert to metric—is the size of the supercharger, which leaps from the Hellcat’s 2.4 liters, past the Demon/Redeye’s 2.7 liters, all the way to 3.0 liters. Fun fact: the exterior package size and mounting interface is identical for all these blowers, and the new one will be offered as a stand-alone part.
Another important differentiator for this engine is that it utilizes an aluminum block that weighs 100 pounds less than the iron blocks on the less hellish/demonic engines. The block, which is also used in Mopar Dodge Challenger Drag Pak race vehicles, bears no relation to the former 6.1-liter Mopar performance aluminum block.
Like the Hellcrate engine, this one comes complete with water pump, flywheel, front sump oil pan, supercharger with throttle body, fuel injectors, and coil packs. Also available, as with Hellcrate, are a complete front-end accessory drive kit (including an alternator, power-steering pump, belts, pulleys and more) and a full electronics kit that includes a powertrain control module, a wiring harness, and even a by-wire accelerator.