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2020 Challenger Drag Pak engine details not yet finalized

by Patrick Rall on

Since introducing the fourth generation Dodge Challenger Drag Pak from Mopar last week, we have gotten a ton of questions from readers about the engine setup and we have seen even more similar questions being posted across social media. While we know that the 354-cubic inch Hemi will be under the hood, we don’t know anything about the supercharged V8, including which supercharger will top the race-ready mill.

When Mopar rolled out the information on the 2020 Dodge Challenger Drag Pak, they explained the changes to the body, the chassis and the suspension, along with pointing out that these 7-second Mopar muscle cars would be powered by the 354-cubic inch Hemi. That comes as little surprise, seeing as how the current Drag Pak that competes in the NHRA Factory Stock Showdown uses a variation of that engine, but we don’t know for sure which supercharger will be tasked with forcing air into the hungry Hemi.

The Drag Pak that is currently in competition now features a 2.9-liter Whipple supercharger and it was expected that Mopar would continue with that blower, but so far, that has not been confirmed. In fact, we spoke with members of the Mopar team at the debut and asked what supercharger would be employed, but we were told that the company hadn’t finalized that information just yet. This unknown part of the Drag Pak equation has left many Mopar racing fans guessing as to what brand of power-added will be at work, with pretty much everyone expecting one of three options.

The most logical choice would be for Mopar to continue using the 2.9-liter Whipple blower, as it has been proven to make good power and with the changes to the suspension, chassis and body, the 354-and-Whipple combination could be enough to get the Challenger Drag Pak further into the 7-second range. The Dodge teams dominated last year, but with the arrival of the new Ford Mustang Cobra Jet, Mopar drivers including Leah Pritchett have found themselves in the middle of the field, so in developing the 2020 car, the build team was looking to shave some tenths.

The changes elsewhere could help the Drag Pak get further into the 7-second range with the Whipple supercharger, but there is also the possibility of a change to a different brand. Some enthusiasts hope to see the Drag Pak run a Magnusson supercharger this year, and that could be the case, but the more interesting rumor pertains to an OEM-style supercharger, similar to what is featured on the Hellcat, Demon and Redeye.

The IHI supercharger that comes stock on the Hellcat cars, the Demon and the Trackhawk has proven to be capable of making big power in standard production form. This includes the 2.4-liter blower on the Hellcat cars and the Trackhawk, along with the 2.7-liter blower on the Demon and Redeye. Mopar could be working with either of those blowers for the Drag Pak, but their relatively small displacement could create a problem when battling the COPO Camaro and Mustang Cobra Jet, both of which have larger displacement superchargers.

However, if Mopar could figure out a way to introduce the 3.0-liter IHI supercharger from the “Hellephant” crate engine, the 2020 Challenger Drag Pak could head straight to the top of the Factory Stock Showdown class. Unfortunately, these details may not be finalized until we get closer to the start of the 2020 racing season, so it could be quite some time before we get the final details on the fourth gen Challenger Drag Pak engine.

Patrick Rall was raised a Mopar boy, spending years racing a Dodge Mirada while working his way through college. After spending a few years post-college in the tax accounting field, Patrick made the jump to the world of journalism and his work has been published in magazines and websites around the world.

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