Hennessey now has a twin-turbo Dodge Demon upgrade with almost double the power of the original. Because of course they do.
We have to ask, why the Demon? Why upgrade a car that already has 840 hp? Why go to all the trouble of making an already fast car even faster? We’re certain if we were to ever ask Hennessey these questions, they’d just look at us blankly as though the question itself doesn’t make any sense.
With all of the work Hennessey puts into the HPE1400 Dodge Demon Twin-Turbo upgrade, we really do question why a limited-production muscle car is the ideal starting point. Mostly because the upgrade starts by replacing the 6.2-L HEMI V8 with a 426-cubic inch (7.0-L) Stroker motor and then giving it a new intercooler with a custom intake manifold. The reason for this is because Hennessey then slaps in a pair of turbochargers on either side of the intercooler.
This unusual configuration makes the nose of the Demon awfully crowded and necessitates giving it a custom out-the-side exhaust system. We don’t really know what the nose of the Demon will look like when it’s done because the car was dyno tested without the grille and bumper installed.
On the plus side, we do know how much power it makes: 1,400 hp and 1,192 lb-ft of torque. After drivetrain losses through the 8-speed automatic, that drops down to 1,237 hp and 1,076 lb-ft at the rear wheels, which is still quite a bit more than the Demon started with.
Besides the usual assortment of upgrades to strengthen the engine’s moving parts, Hennessey also took the rare step of upgrading the Demon’s suspension to handle 1,400 hp. A 9-inch IRS suspension upgrade and “performance axles” help the car survive such extreme power. At least, on paper. We’ll have to see how the car behaves in actual road testing.
Hennessey hasn’t given a price on their beast, but we can likely assume that it won’t be particularly cheap.