MODERN OVERDRIVE SYSTEMS FOR MUSCLE CARS, TRUCKS AND CUSTOMS

Products

Transmission Kits
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Transmissions
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Hydraulic Clutch Kits
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Bell housings and adapters
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Shifters
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Flywheels
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Clutches
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Cross members
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Shift handles and knobs
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Services
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Pedals
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Gear and apparel
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Electric Power Steering
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Fluids
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Accessories
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Crate Engines
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Rear Axle Assemblies
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Differentials
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News & Tech

American Powertrain Introduces 4x2 TR-4050™ 5-Speed Pro-Fit HD Manual Transmission Kit For RWD 1988-98 Chevy/GMC OBS Trucks

Cookeville, TN (May 4, 2023) – American Powertrain, the nation’s leading distributor of TREMEC® transmissions, now offers a TREMEC 4×2 TR-4050™ 5-speed Pro-Fit HD manual...

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American Powertrain Introduces Complete Square Body Chevy/GMC 4x4 TREMEC 4050 Transmission Kit for 1973-1987 Pickups 

Cookeville, TN (April 11, 2023) – With Chevy/GMC Square Bodies all the rage, American Powertrain the nation’s leading distributor of TREMEC transmissions, is introducing a...

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Spring into Overdrive!

Spring is in the air and its time to get that project rolling! We are here to help. Starting now till May 1st. Get $250...

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Videos

Play Video
Fox Body Mustang Hydraulic Clutch Conversion from American Powertrain

Stacey David from Gearz goes over our new under dash Hydramax Hydraulic Clutch conversion for Fox Body Mustangs. Cut the Cable for good!

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American Powertrain 3rd Gen Camaro Tremec TKX 5-speed kit

This quick video goes over the features of our new Tremec TKX 5-speed kit for 3rd Gen Camaro and Firebird. Fits 1982-92 GM F-body. 6-speed kit is also available right now.

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AmericanPowertrain 1st Gen Mustang TREMEC TKX 5 Speed Kit Install

Tommy from Detroit Muscle on PowerNation TV goes over the basics of installing a new Tremec Transmissions TKX in a classic first gen mustang using American Powertrain's conversion kit including our crossmember, Hydramax® hydraulic clutch, and White Lightning Shifter.