Transmission Conversion and Accessories for your GM Transmission Conversion and Accessories for your Mopar Transmission Conversion and Accessories for your Ford American Powertrain American Powertrain
 
Return to the Home Page of American Powertrain 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 Although 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. We carry a full line of Performance Parts & Accessories for our 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) 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!


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GM Models
Bel Air
Camaro 67-69
Camaro 70-81
Camaro 82-92
Camaro 93-02
Chevelle 64-67
Chevelle 68-72
Chevy II 62-67
Chevy II 68-72
Corvette C1
Corvette C2
Corvette C3
Corvette C4
Firebird 67-69
Firebird 70-81
Firebird 82-92
Firebird 93-02
GTO 64-67
GTO 68-72
Impala 60-69
Nova 62-67
Nova 68-72
GM Truck
Street Rod/Kit Car
 

Call us for great pricing deals every day at 931-646-4836
'70 overdrive equipped Chevelle 1968-1972 Chevelle / El Camino / GTO Transmissions & Accessories
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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.

 
5 Speeds
ProFit™ 5-Speed
System
Tremec Overdrive Transmission System for 1968, 1969, 1970, 1971, 1972 Chevelle / El Camino / GTO
This kit is perfect for upgrading your Chevelle / El Camino / GTO 4-speed manual transmission to a 5-speed overdrive.
 
6 Speeds
 ProFit™ T56 Magnum
6-Speed System
ProFit™ T56 Magnum 6-Speed Transmission System for 1968, 1969, 1970, 1971, 1972 Chevelle / El Camino / GTO
The smoothest shifting, greatest driving, strongest and most versatile 6-speed aftermarket transmission TREMEC has ever produced.
 


 
5 Speeds
BasicFit™ 5-Speed TREMECTransmission System
Basic Tremec Overdrive Transmission Conversion Kit for 1968, 1969, 1970, 1971, 1972 Chevelle / El Camino / GTO
The most economical way to upgrade your Chevelle / El Camino / GTO 4-speed manual transmission to a 5-speed overdrive
 
6 Speeds
 BasicFit™ T56 Magnum
6-Speed System
 
BasicFit™ T56 Magnum 6-Speed Transmission System for 1968, 1969, 1970, 1971, 1972 Chevelle / El Camino / GTO
The smoothest shifting, greatest driving, strongest and most versatile 6-speed aftermarket transmission TREMEC has ever produced.
 


 
5 Speeds
TREMEC 5-Speed
Bare Units
TKO-500 / TKO-600
Transmission
Basic 5-Speed Kit Transmission for 1968, 1969, 1970, 1971, 1972 Chevelle / El Camino / GTO
Bare Unit
 
6 Speeds
 TREMEC T56 Magnum
Bare Unit
Transmissions
 
TREMEC T56 Magnum Bare Unit Transmission for 1968, 1969, 1970, 1971, 1972 Chevelle / El Camino / GTO
Bare Unit
 


 
5 Speeds
ProFit™ 5-Speed System for Automatics
 
Tremec Overdrive Transmission Kit for 1968, 1969, 1970, 1971, 1972 Chevelle / El Camino / GTO
This kit is perfect for upgrading your Chevelle / El Camino / GTO automatic transmission to a 5-speed overdrive.
 
6 Speeds
 ProFit™ T56 Magnum
6-Speed System for Automatics
ProFit™ T56 Magnum 6-Speed System for Automatics 1968, 1969, 1970, 1971, 1972 Chevelle / El Camino / GTO
The smoothest shifting, greatest driving, strongest and most versatile 6-speed aftermarket transmission TREMEC has ever produced.
 


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Crate Engines for GM Crate Engines  
 
 
GM Bellhousings Bellhousings  
 
 
ProGrip Flywheels Flywheels  
 
 
GM Scattershields and Flexplates Scattershields  
 
 
GM Scattershields and Flexplates Flexplates  
 
 
Clutches Clutches  
 
 
GM Mechanical Linkage Mechanical Linkage  
 
 
HYDRAMAX Hydraulic Clutch Kits Hydraulic Actuators  
 
 
GM Pedals Pedals  
 
 
GM Shifters Shift Handles  
 
 
Custom Gearshift Knobs Custom Shift Knobs  

  
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.

OD Automatic
 American Powertrain's SuperShift™ Overdrive Automatic System
Chevelle SuperShift™ Overdrive Automatic Transmission System for 1968, 1969, 1970, 1971, 1972 Chevelle / El Camino / GTO
SuperShift™ to an overdrive automatic system when converting your Chevelle.


Why Buy From American Powertrain?

  
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The following are Trademarks of The Driven Man, LLC and are for the sole use of its companies and assignees.
Any other use without written permission of The Driven Man, LLC is prohibited:
American Powertrain™, the American Powertrain Eagle logo/graphic, The Driven Man™ and the following terms:
Ceramix™, Organix™, ProTwin™, TKOExtreme™, TKO600Extreme™, 600Extreme™, Hydramax™, 3650S™, 3650Plus™, 3650Extreme™, T45S™, T45Plus™, T45Extreme™, T5R™, T5S™, T5Plus™, T5Extreme™, ProGrip™, ProFit™, ProBuilt™, T56Plus™, T56Extreme™
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