American Powertrain Has High-powered 6-speed Packages For Mopar’s Hellions


If you’re lucky enough to have a Hellephant engine headed your way, then the thought of drivetrain durability has undoubtedly crossed your mind. With 1,000 horsepower and 950 lb-ft of torque on tap, it’s put itself well outside the realm of even the raciest 727 or 833 transmissions.

Dropping in a modern 8-speed automatic ain’t for the faint of heart, so that pretty much leaves some sort of aftermarket three-pedal setup as the only viable option. Tremec offers the TKX and T-56 Magnum, but they’re only rated at a respective 600 and 700 lb-ft off the shelf.

American Powertrain has the answer with their Stage 2 Extreme Upgrade Magnum 6-speed kits for G3 Hemi engines. A highly-specialized cryogenic and polishing treatment is responsible for an incredible 1,100 lb-ft of torque capacity. That ridiculous rating takes care of every Hemi under Mopar’s aftermarket hood including the 6.2L Hellcrate, 6.2L Redeye Hellcrate, and 426 Hellephant.

Furthermore, the complete package comes with a selection of curated parts that are also primed for four-digit power. Aside from the T-56 Magnum transmission, a Quick Time SFI bellhousing, Centerforce DYAD twin-disc clutch, billet flywheel, ARP bolts, Hydramax hydraulic throw-out bearing, fluid, mount, reverse lockout, pilot bearing, and slip yoke for a 1350 U-joint are all included.

While the kit isn’t specific to any vehicle, its primary intention is for use in classic Mopar muscle car installations. However, American Powertrain also has complimentary items like cross members, driveshafts, and pedals, so it’s best to request a quote for your exact application.

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Kent Will

News Editor Kent grew up in the shop with his old man and his '70 Charger R/T. His first car was a 1969 Super Bee project when Kent was fourteen. That restoration experience lead to pursuing a degree in Mechanical Engineering and a career in manufacturing. Since then, the garage has expanded to include a '67 Satellite, a '72 Scamp, and a 2010 Mopar '10 Challenger.

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