American Powertrain


About American Powertrain


More Info on American Powertrain

American Powertrain exists to help muscle car owners equip their cars with modern drivetrain technology, offering overdrive transmission systems, hydraulic clutch kits and a wide range of drivetrain related parts from diff to block. Since American Powertrain opened for business we have quickly become the world’s largest TREMEC dealer. Our installation parts and systems are proudly made right here in America for unmatched quality.Our staff of highly experienced enthusiasts has years of experience helping car owners and builders make the right drivetrain choices.


American Powertrain

GearStar Automatic Transmission, No. 4R70W

May 17, 2024
Built for Ford small block engines
American Powertrain

ProTwin Disc Clutch

April 8, 2024
Suited for GM, Ford, and Mopar
American Powertrain
Pro-Fit HD manual transmission kit, #PFGM-40005 from American Powertrain
American Powertrain
American Powertrain Square Body4050 Kit 6x4

Square Body Chevy/GMC 4x4 kit

April 21, 2023
Includes everything to install a 4x4 TR-4050 5-speed 4WD transmission

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