Gear Vendors, Inc., manufacturers of the popular UNDER/OVERDRIVE brand of auxiliary transmissions has announced the availability of their new T-10 Manual Transmission kits. Chosen at SEMA as one of the best new Street -Performance products (runner-up), the kits make it possible to adapt a Gear Vendors unit for use on the ever popular T-10 trans. The Gear Vendors UNDER/OVERDRIVE is a 2-speed planetary gearbox that bolts to the vehicle's existing transmission allowing the driver a direct drive (1:1) or overdrive (1:1.286) option in any gear, at any moment. With manual transmission applications such as the T-10, not only does the Gear
Vendors add a fifth gear of overdrive to your classic muscle car transmission, its gear splitting capabilities enables you to make full throttle, clutchless shifts into overdrive. Kits are also available for Muncie M20/21/22, Ford Top Loader, and Mopar 833 four speed manual transmissions. If you are tired of being beaten by automatics, this is the solution. You can now have the thrill of driving your muscle car with its authentic, original manual transmission and the added ease and quickness of clutchless shifting as well as increased fuel economy and a more pleasurable highway cruising experience. A race proven winner in CORR, the Paris-Drakar Rally, Baja 1000, Bonneville, and NHRA, all Gear Vendors come with an unconditional 30 day money back guarantee and limited two year warranty for any non-commercial application regardless of horsepower, application, or race usage.
| T-10 stock ratios: T-10 w/clutchless overdrive: | 2.20, 1.64, 1.31, 1.00 2.20, 1.71, 1.28, 1.02, .78 |
| M21/22 stock ratios: M21/22 w/clutchless overdrive: | 2.20, 1.64, 1.28, 1.00 2.20, 1.71, 1.28, 1.00, .78 |
| M20 stock wide ratios: M20 wide ratio w/clutchless overdrive: | 2.52, 1.88, 1.46, 1.00 2.52, 1.96, 1.46, 1.14, .78 |
| Ford stock close ratios: Ford close ratio w/clutchless overdrive: | 2.32, 1.69, 1.29, 1.00 2.32, 1.80, 1.32, 1.01, .78 |
| Ford stock wide ratios: Ford wide ratio w/clutchless overdrive: | 2.78, 1.93, 1.36, 1.00 2.78, 2.17, 1.51, 1.06, .78 |
| Mopar 833 ratios: Mopar 833 w/clutchless overdrive: | 2.44, 1.77, 1.34, 1.00 2.44, 1.90, 1.38, 1.05, .78 |
| Mopar 833 stock wide ratios: Mopar 833 wide ratio w/clutchless overdrive: | 2.65, 1.91, 1.39, 1.00 2.65, 2.07, 1.49, 1.08, .78 |
| **Clutchless overdrive ratios shown here are the result of shift from 1st gear to 1st-over clutchless, then leaving the overdrive "on" as you progress through the ratios. This demonstrates the faster launch and closer ratio benefit in the 1/2 mile but the overdrive can be shifted "on" or "off" any gear, or at anytime you choose to accelerate and desire a clutchless shift. | |
