American Powertrain Announces 6-Speed Swap Kits for GEN-III HEMI Swapped Muscle Cars

American Powertrain Introduces High Horsepower GEN III HEMI® 6-Speed Transmission Package

Cookeville, TN (July 2021) American Powertrain now offers a new T-56 Magnum package designed for GEN III HEMI®, Hellcat, Hellcrate and Hellephant engines up to 1100 hp. The Stage 2 upgrade takes high horsepower Tremec® Magnum 6-speeds to a new level with increased torque capacity up to 1100 lbs-ft of torque. The package includes transmission backed up with a proven DYAD dual disc clutch by Centerforce® Clutches, rated for a holding capacity of 1100 lbs-ft of torque at the crank. The kit also includes a QuickTime steel scattershield bellhousing, Hydramax hydraulic conversion bearing, four quarts of transmission fluid and all the hardware needed for installation.

The Magnum 6-speed package is designed for enthusiasts planning a GEN III swap into a classic Mopar muscle car. American Powertrain is the one stop shop for all installation parts for a complete swap including the crossmember and correct shifter location.

For more information about the new GEN III Hemi Package, visit or call 931-646-4836 to speak with one of American Powertrain’s highly qualified sales technicians.

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