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
1955-1962 Corvette (C1)
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™ SystemsOnly 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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1961 Corvette overdrive equipped
 1955-1962 Corvette (C1)

Choose your new transmission system ...

ProFit™ 5-Speed System

ProFit™ 5-Speed System
for Automatics

1956-62 Corvette Ultimate Fit Deluxe Kit

C1 Corvette ProFit 5-speed - Click here

1956-62 Corvette Ultimate Fit Elite Kit

C1 Corvette ProFit 5-speed - Click here

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

This kit is perfect for upgrading your Corvette automatic transmission to a 5-speed 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™ SystemsOnly 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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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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