Differences in the track, tire sizes, class rules, and other factors can cause you to rethink your selection of gears, possibly from week to week and even from the beginning to the end of an event (in ...

"Give me a lever long enough and a fulcrum on which to place it, and I shall move the world." — Archimedes (287- 212 B.C.) On the street, everything is a compromise. Power is now easier to make than ...

Engine capacity, transmission speed, and drivetrain options are important factors when shopping for a pickup truck. But there is one area that shouldn’t be overlooked, and that’s choosing the right ...

What if the hot rod is not a racecar or mega-horse street flier, but rather a cruiser running in the mid-400-horse range that will never see the track? Building a rear end capable of withstanding 800 ...

Downspeeding saves fuel, and with aerodynamics and tires continuing to improve, truck manufacturers are experimenting with still lower rear axle ratios. I recently took a ride in a Mack Anthem with an ...

Muscle cars have long captured the imagination of automotive enthusiasts with their powerful engines and sleek designs. However, a lesser-known aspect that further enhances their performance is the ...

It can be argued that there's no bigger bang-for-the-buck performance upgrade than new axle gears. Auto manufacturers are tasked with building a vehicle that is optimized for both highway efficiency, ...

STATING that improvements can be made in the smoothness, flexibility and economy of motor-cars by the provision of axle ratios and transmission steps that will make high road-speeds possible with ...

Few vehicle modifications have as major an impact as changing gear ratios, and it's because your car's gear ratio directly translates to how it delivers power. Think about it: The gear ratio, or how ...