Higher, lower, taller, shorter, more, lesshow do you have any idea what guys are talking about when it comes to rear-axle gears? It's confusing, because the slang seems to contradict the math.

Mopar muscle car owners have been dealing with the same dilemma for decades: solving the gear ratio paradox. If you actually drive your Mopar muscle you know exactly what we are referring to. Let's ...

Because we use them every day, the operation of a car seems simple, but a car is a very complex machine. One of the most complex systems in the typical vehicle is the automatic transmission. This ...

The new GM 10-speed automatic transmission is now either standard or an option on GM’s full-size SUVs. In these applications, the new 10-speed is known as the Hydra-Matic 10L80 and is assigned GM RPO ...

One of the most popular drivetrain mods done to early Mustangs is to swap out the non-overdriven three- and four-speed transmissions with the later-model overdrive T-5 five-speed. Not only does the ...

A mixer chassis sometimes needs to creep over uneven surfaces or while pouring concrete sidewalks or curbs. Depending on axle gearing, I-Shift crawler gears allow speeds as low as 0.6 mph. A mixer ...

The off-road world thrives on rugged capability and raw power, and for years, side-by-side vehicles have relied on the trusty continuously variable transmission (CVT) to tackle everything from muddy ...

Brett T. Evans has more than a decade of experience driving, writing about, and evaluating automobiles. His early career comprised writing about pre- and post-war classic cars, as well as late-model ...

The optimal gear ratio depends on how the engine fits the intended use of the boat. Courtesy Yamaha In every boat test we run, we include certain specs that we feel are valuable to our readers. Some ...

Default, conservative gear ratios. Note the smooth curve of the line connecting the ratio graph bars. Gearing ratios determine how many turns of the driveshaft result in a single turn of the wheels ...