Dedicated racers have associated the G-Force marquee with superior products for years, and now we bring that reputation to the street enthusiast as well.
The much anticipated G-Force T-5 upgrade kits are now available. These kits allow for substantially increased horsepower handling capabilities while utilizing the factory T-5 location and mounting dimensions. This simplifies installation tremendously and assures the stock look, if so desired. For vehicles not already running a T-5, an installation kit may be available for your specific application. While the G-Force T-5 conversion may look identical on the outside to a stock T-5, rest assured that they are vastly different on the inside.
The kits are available in synchronized, dog ring straight cut and helical cut dog ring (NMRA Approved) versions and feature high nickel gears, a heavy duty 26 spline input shaft, and an available 9310 mainshaft upgrade. There is even an optional steel shift fork upgrade. The race only dog ring kits utilize straight-cut gears to cope with the more aggressive dog ring engagement, while the synchronized kit features helical-cut gears for better noise reduction while still retaining extra gear width.
Entirely new transmissions with the kit pre-installed are available if you don't already have a T-5. This assures all new parts are utilized and also gives you the peace of mind knowing that your transmission was assembled by highly skilled technicians.
If a used T-5 is available to you, even a broken one, it can be sent back for the upgrade installation and all worn out or broken parts will be repaired or replaced, at our discretion, with new or remanufactured parts. As long as the case is good, we can use it. Every upgrade kit even comes with the required oil. This oil must be run with the upgrade kit to insure optimum performance and durability. Also, the shifter installation on our conversions is identical to a stock T-5, so any existing stock or aftermarket shifter can be installed. We recommend the use of the Pro-5.0 aftermarket shifter. Normally the stock T-5 is rated at about 300 ft-lb of torque capacity. While this is fine for stock or lightly modified engine combinations, especially running small street tires, it isn't generally enough for most of today's high powered street/strip engine combinations, especially those running bigger, more aggressive tires.
This is where the G-Force T-5 kit comes into play. Although we do not like to put torque or horsepower ratings on our products due to the vast differences in clutch, engine, chassis, tire, and mounting combinations, we can give a very rough estimate. There are simply too many variables to consider when trying to figure out how much power or torque a transmission will take in a particular application. Generally, it can be assumed that with the available upgraded mainshaft, the G-Force T-5 kit will handle roughly 600 hp or 500 ft-lb. or torque in a 3300 lb. vehicle running drag radials at the track with a moderate clutch upgrade. Obviously this is just a rough estimate regarding the power and torque handling capability, but it should give some idea as to what the G-Force T-5 kit will handle in your particular application. Our T-5 kits are currently available with the preferred 2.94, 1.94, 1.34, 1.00 ratios in gears 1 thru 4, and because most performance enthusiasts run a relatively steep rear gear, our synchronized kit utilizes a .59 overdrive. This is slightly taller than the stock .68 or .63 ratio and allows the engine to turn less RPM at cruising speed. This equates to less engine wear and better gas mileage while still maintaining incredible acceleration in the first 4 gears - amazing! We are currently working on more ratios for both kits, including a special dog-ring-only road race ratio.