In the automotive world, especially when it comes to off-road trucks and SUVs, differentials come up all the time. Is your differential locking, limited slip or open? Do you have a transfer case? One ...

â ¢ Gears and tires go hand in hand. When weight distribution is good, "slicks" can be used on drag machines to advantage for best traction from a standing start. There's GO in them thar gears! A car ...

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 ...

Why is the Gear Vendors overdrive so popular on HOT ROD Drag Week? Racers know it will live behind 4,000 hp, can be installed in a weekend, and doesn't share fluid with your transmission so it won't ...

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 ...

Your rear differential is one of the most unappreciated parts in your car or truck. It does what might be the hardest job of all of those components, multiplying torque from your transmission and ...

Pickup trucks seem to be the last bastion of flexibility when it comes to choices of factory equipment. While the rest of the motoring masses are stuck with whatever package an automaker decides to ...