G-Force Street 6-Speed Transmission

With the ability to make over 1000hp on the street today, transmissions are pushed harder and harder and G-Force understands. With that in mind G-force manufactures a 6-Speed upgrade kit available for any T-56 variation. Whether you have a power adder or just big cubic inches, we know this is what you have been waiting for. We have TRUE bolt-in kits to fit Viper, Corvette, Camaro, and Cobra applications along with custom installation kits that allow for an even wider range of installations. With the optional G-Force mainshafts, these kits have the ability to handle approximately 1200* horsepower and 1000 ft-lb. of torque depending on the application. Our kit combines the strength of a full-out race transmission with the factory look, drivability, and fit of an OEM installation. The G-Force Street 6-Speed conversion requires no external case, tailhousing, or shifter modifications to your existing T-56. This means that your stock mounting hardware and dimensions will be utilized. This is not a one-size-fits-all kit. We have kits specifically designed for each application including special inputs for each vehicle.

In order to achieve the exceptional horsepower and torque handling abilities this kit has to offer, G-Force has again gone back to its racing heritage. While totally reengineering the gear design and tooth profile, we also added gear width wherever possible and have gone with our vast experience in terms of material selection. We use a proven 9310 alloy material for the gears and this means exceptional gear strength. These kits can utilize the factory overdrive gears or they can be upgraded with G-Force Overdrives as well.

These G-Force Street 6-Speed kits feature helical gearing to maintain a comfortable noise level while still maintaining exceptional strength.

While slightly noisier than a stock T-56, the increased gear noise in not excessive and nothing like a straightcut, race-only transmission. We have tested slightly differing designs to come up with the best strength/quietness levels possible when dealing with the excessive power that these kits are made to cope with.

To further enhance the performance of your T-56, G-Force has come up with some additional performance options. Quicker, smoother shifting is always a plus when driving any manual transmission, and this is why G-Force has manufactured a double/triple cone conversion for your Viper, Camaro, or Cobra. While initially found only in C5 and C6 Corvette applications, this conversion allows for the installation of the superior shifting double/triple cone synchronizer setup to be installed into any T-56. If you own a Corvette, you already have this setup in your transmission. We do, however, have upgraded mainshafts made specifically for the C5-C6 transmissions. If you are looking for a transmission to be used in a project car or just want to trade in your worn out T-56, G-Force can build you a complete unit with our gear kit already installed. We can use a new or remanufactured core depending on what you would like.

G-Force also has a dog ring (face tooth) version of this transmission available as well.

We also have our 2.71 gear kit available in a dog-ring version. The overdrives are kept synchronized to provide a smooth, stock-like driving experience in 5th and 6th gears. Like the synchronized versions of our gear kits, the dog-ring kit is rated at 1200hp, plus or minus depending on the specific application.

*Obviously, power and torque ratings vary more or less depending upon weight, clutch, tire, RPM