OK, let's start this off by listing all the disadvantages of installing a Gear Vendors under/overdrive in your vehicle. For starters, it adds 12.25 inches to the rear of your drivetrain. Done. Oh, ...

It's hard to remember that up until around the late 1980s or even early 1990s not every vehicle came from the factory with an overdrive manual or automatic transmission. Furthermore, many of these ...

Although overdrive sounds like a term related to a vehicle’s high-performance attributes, it is the opposite. This feature – generally turned on and off with the touch of a button – reduces an ...

Since the health of our planet became a major societal focus decades ago, automotive engineers have been on a mission to find a balance between performance and efficiency. In the past, the two ...

From lock-up automatics to race-ready six-speeds, these overdrive transmissions reshaped street performance, diesel builds, and modern muscle’s success at the dragstrip. There was a time when ...

When it comes to applying the latest technology to street rods some of us are more enthusiastic than others. If nuclear powerplants suddenly became available you can be sure Brennan would shoehorn a ...

I've not been able to get a real good definition out of anyone I ask, so I'm posting it up to my Living Encyclopedia (tm) and seeing if anyone can tell me.<P>It seems when I turn overdrive off, I get ...

Everyone who's ever driven an automatic has probably figured out that the 'D' on the shifter stands for 'drive.' How an automatic transmission works is a bit complicated. It uses a torque converter to ...