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.
SFI rated for hundreds of manual and automatic applications at the best prices anywhere.
AP Aluminum Bellhousings
Made in the USA to very exacting standards for GM, Ford and Mopar.
Science Friction Clutches & Flywheels
Our own exclusive line of top shelf performance parts for all 4, 5 and 6-speeds.
HYDRAMAX Hydraulic Systems
For 4-speed, 5-speed and 6-speed applications; the best selling hydraulic conversions in the industry.
High strength aluminum cross members for almost any manual or automatic transmission.
From our wide range of trusted engine builders and crate programs.
12-bolt and Ford 9” assemblies hand built in NASCAR country for your GM or Ford complete and ready to bolt in.