Performance and Improvement Parts for your Specialty Auto
Transmission Conversion and Accessories for your Mopar Transmission Conversion and Accessories for your GM Transmission Conversion and Accessories for your Ford Transmission Conversion and Accessories for your GM Transmission Conversion and Accessories for your Ford Transmission Conversion and Accessories for your Ford Transmission Conversion and Accessories for your Mopar Click or Call about your 5-speed or 6-speed Transmission Conversion and Accessories for your GM, Mopar or Ford.
  Your one stop source for Tremec 5-Speed and 6-Speed systems and components for your muscle, race, rod or pony car.

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Return to the Home Page of The Driven ManRequest A Quote on a ProFit Transmission System - Modern Overdrive Tremec TKO500, TKO600, T5, and T56 systems for 4-spd, 5-spd and 6-speed ConversionsAlthough it's more fun to DRIVE IT, you can Speed Analyze your new Modern Overdrive Tremec TKO500, TKO600, T5, and T56 systems for 4-spd, 5-spd and 6-speed Conversions.Transmission Installers and Service Companies on Modern Overdrive Tremec TKO500, TKO600, T5, and T56 systems for 4-spd, 5-spd and 6-speed Conversions for your new System.  If you know a good Installer, please send them our way.Information about how to Place and Order, Shipping, Warranty, Returns, Policies, Etc. (Also see menu items for specific information)The Driven Man issues a quarterly to yearly newsletter through email subscriptions.  Subscribe Now.This website contains a lot of information and instructions on your transmission conversion from Tips and Tricks, to Installation Pictures and Instructions.  Should you need further help, our Customer Service Reps and Owners (Enthusiasts ourselves) are always here to help you 24/7.  Just call, write, or stop by!
American Powertrain Performance Parts Division

GM Truck Tremec Overdrive Transmission Conversion Kit

ProFit™ Systems

The ProFit™ Systems are the easiest and most economical way to put a high strength, modern overdrive Tremec TKO 5-speed transmission or T56 6-speed transmission in your car. Our Custom Engineered ProShift™ Tailhousings and Shift Mechanisms provide the smoothest operation, the shortest throws and the only true internal offset in the business. Enjoy a ProFit transmission with low RPM cruising, and great fuel economy today.

SuperShift™ Systems

Only American Powertrain's SuperShift™ Systems provide every component needed to replace your stock transmission with an overdrive 4-speed automatic, right down to a stock appearing 4-Speed Shift Selector for the console.  Install SuperShift™ in a weekend and begin enjoying the hot performance, great fuel mileage, extended cruising range and quiet highway operation of The SuperShift™ System without decreasing the value of your car.

Transmission Conversion and Accessories for your Mopar Transmission Conversion and Accessories for your GM Transmission Conversion and Accessories for your Ford
Click or Call about your 5-speed or 6-speed Transmission Conversion and Accessories for your GM, Mopar or Ford.

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GM Truck
1960-72 GM Truck Tremec Overdrive Transmission Conversion Kits GM Truck Tremec Overdrive Transmission Conversion Kit

Choose your new transmission system ...

BasicFit 5-Speed System

ProFit™ 5-Speed System

Basic Tremec Overdrive Transmission Conversion Kit for Street Rods

BasicFit 5-speed - Click here

 Deluxe Tremec Overdrive Transmission Kit for Street Rods

ProFit 5-speed - Click here

The most economical way to upgrade your GM Truck 4-speed manual transmission to a 5-speed overdrive

This kit is perfect for upgrading your GM Truck 4-speed manual transmission to a 5-speed overdrive.
   

ProFit™ 5-Speed System
for Automatics

ProFit™ 6-Speed System
 Elite Tremec Overdrive Transmission Kit for Street Rods

ProFit 5-speed for automatics - Click here
6 SPEED KITS AVAILABLE FOR A LIMITED TIME !


Please call for pricing and details


For converting your GM Truck automatic transmission to a 5-speed overdrive or upgrading your 4-speed automatic to a 5-speed overdrive.

This kit is perfect for upgrading your GM Truck 4-speed manual transmission to a 6-speed double overdrive.

 

ProFit™ Systems

The ProFit™ Systems are the easiest and most economical way to put a high strength, modern overdrive Tremec TKO 5-speed transmission or T56 6-speed transmission in your car. Our Custom Engineered ProShift™ Tailhousings and Shift Mechanisms provide the smoothest operation, the shortest throws and the only true internal offset in the business. Enjoy a ProFit transmission with low RPM cruising, and great fuel economy today.

SuperShift™ Systems

Only American Powertrain's SuperShift™ Systems provide every component needed to replace your stock transmission with an overdrive 4-speed automatic, right down to a stock appearing 4-Speed Shift Selector for the console.  Install SuperShift™ in a weekend and begin enjoying the hot performance, great fuel mileage, extended cruising range and quiet highway operation of The SuperShift™ System without decreasing the value of your car.


Request A Quote on a ProFit Transmission System - Modern Overdrive Tremec TKO500, TKO600, T5, and T56 systems for 4-spd, 5-spd and 6-speed Conversions


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American Powertrain, a division of The Driven Man, LLC, is a proud authorized distributor for Transmission Technology Corporation, maker of world famous TREMEC manual transmissions.

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