The most popular transmission modifications for cars equipped with automatics are valve body reprogramming kits and torque converters. Valve body kits are generally called upon to increase shift ...

Two basic versions (an 8-inch and a 9-inch) of the bolt-together converter are offered. The size selected depends on the engine size, vehicle weight and stall speed ranges desired, although there is ...

Viewer-submitted questions for The Car Doctor: Q: I have a 2017 Honda Ridgeline (66k miles) without four-wheel drive. I know there is an issue with the transmission that causes the truck to vibrate at ...

For straight line guys, spending hundreds of dollars on something that doesn't give you any extra horsepower doesn't exactly seem like a good deal. Even a federal bean counter could figure that one ...

The TorqueFlite 999 is a Chrysler three-speed automatic transmission with an aluminum case and 23-spline output shaft. Various versions of this transmission have been around since the TorqueFlite's ...