In first gear, the gear ratio of 3.64-to-1 means that for one transmission revolution, the engine turns 3.64 times. From there it turns the differential, which has another gear called final drive.

A few weeks ago, I went to the amazing Auburn Cord Duesenberg Automobile Museum in Indiana, where I learned about an axle that has not just one gear ratio like in pretty much all modern cars, but ...

Opinions vary on what constitutes a "granny transmission," but in a nutshell it's a manual transmission with an extremely low gear ratio that allows the vehicle to crawl along at a super-slow pace ...

A transmission is a vehicle’s gearbox. It’s roughly analogous to the gear shifter and chain system employed in bicycles. Transmission components are always mounted straight on the engine so that their ...

Most electric cars have a single gear ratio. You probably understand the basic reasons for this, but the math is still super fascinating.

For a street-driven Jeep or for any rig that wants to be driven at high speeds, the axle gear ratio will be your next gearing choice after having decided if you'll be using an overdrive transmission.