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

B-Body (1971-1974) ...
Charger or Road Runner

The ProFit™ System is the easiest and most economical way to put a high strength, modern overdrive Tremec TKO 5-speed transmission in your 1971-1974 Charger or Road Runner.  Enjoy a ProFit transmission with low RPM cruising, and great fuel economy today.

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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B-Body (1971-1974) ...

Charger or Road Runner

1971-1974 B Body
♦  Complete Overdrive Conversion Kits
♦  Excellent Customer Service
♦  Unlimited Tech Support
♦ 
Orders Shipped within 48 Hours
♦  Competitive Prices
♦  Perfect Shift Stick Positioning
♦  No Console Modifications Required
♦  Premium Quality Kit Components
We also offer a broad range of other top-quality Mopar drivetrain components and accessories.

Installing a five speed overdrive Tremec transmission in your classic Mopar will be one of the best improvements that you can make to your classic car. Watch your cruising RPM’s drop by as much as 36% while your driving pleasure goes up! The all new Tremec TKO-500 and TKO-600’s are high performance, true overdrive five speed transmissions. With torque ratings of 500 ft/lbs. and 600 ft/lbs. respectively, these all new Tremec transmissions are among the most versatile transmissions produced! In addition to the all-star line up of parts that we have assembled for our TKO kits, we have a commitment to offering the best, most responsive, and professional customer service & support you will find.

We specialize exclusively in Tremec TKO conversion kits for Classic Mopars and we have “walked the walk” by personally installing TKO’s into classic Mopar cars. Email inquiries are answered by the end of the day, we typically answer phone calls within three rings and you will always speak directly to one of the owners. We do our best to keep every part we offer in stock at all times and orders are usually shipped out within 48 hours.

We look forward to helping you with 5-speed Tremec transmission needs.

Choose your new transmission system ...

ProFit™ 5-Speed System

  ProFit™ 5-Speed System
for Automatics

Mopar B Body 5 speed 71-74

 

Mopar B Body 5 speed for Automatics 71-74

ProFit™ 5-speed - Click here    ProFit™ 5-speed for Automatics
- Click here

For upgrading your 1971-1974 Charger or Road Runner 4-speed manual transmission to a 5-speed overdrive.

  For upgrading your 1971-1974 Charger or Road Runner 4-speed automatic transmission to a 5-speed overdrive.
The ProFit™ System is the easiest and most economical way to put a high strength, modern overdrive Tremec TKO 5-speed transmission in your 1971-1974 Charger or Road Runner.  Enjoy a ProFit transmission with low RPM cruising, and great fuel economy today.
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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 Why Buy From Us?


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24-hours a day, nights, weekends and holidays when you are most likely to be working on your car.


Industry leading 24-month warranty from date of installation with 2-year installation grace period.  Includes
24/7 Customer First Tech Support.

 



American Powertrain's
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is manned by experienced enthusiasts with years of installation experience

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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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