American Powertrain Announces New Pro-Fit 5 & 6-Speed System for 1978 – 1987 GM G Body Vehicles


American Powertrain Announces New Pro-Fit 5 & 6-Speed System for 1978 – 1987 GM G Body Vehicles

Good news for G-body owners out there, American Powertrain has announced new Pro-Fit 5 & 6 speed systems for 1978-1987 GMs! These are the most well sorted, organized, and comprehensive swap packages available and they include the transmission with your choice of gearing as well.

Want a TKO 5 speed or a Magnum 6-speed? No sweat. The crossmember, mounts, driveshaft, offset shifter, and speedometer setup are all included here so you basically get the specs to American Powertrain and then the magic happens.

No more junkyard solutions. This is engineered equipment designed to work together and deliver you the best driving experience possible! More below!

American Powertrain Announces New Pro-Fit 5 & 6-Speed System for 1978 – 1987 GM G Body Vehicles
System includes TREMEC® transmission with choice of gear ratios

Cookeville, TN (August 27, 2019) – American Powertrain, the world’s largest TREMEC dealer, is now introducing the next generation Pro-Fit 5-speed & 6-speed system for 1978-1988 GM G Body.

Designed around the famous TREMEC® TKO 5-speed and the dual overdrive Magnum 6-speed transmissions, the Pro-Fit kits features a custom adjustable cross member, custom high strength driveshaft, trans mount, offset shifter and speedo solution. G-body hydraulic clutch kit is also available to complete the conversion to three pedals.

American Powertrain has all the parts and pieces of the Pro-Fit kits available separate so you can build out your kit to fit the needs of the project. A full assortment of bell housings, clutches, flywheels and drive line parts are available from American Powertrain.

All Pro-Fit kits are covered by American Powertrain’s two year warranty and includes extended hours tech support.

For more information visit www.americanpowertrain.com. To speak with one of American Powertrain’s highly qualified sales technicians, call 931-646-4836.


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