As racers and engine builders are pushing rpm limits that are higher than ever before, more and more race teams are finding the need to run rearend coolers. If you regularly run extra-distance races ...

There's no debate that diesel-powered pickups are making more power than ever, and when you combine that with a big lift, it puts more strain on the rear end gears. When you put 37-inch-tall tires on ...

It's natural when building a hot rod to want to tackle the engine first. After all, the main question you'll hear is, "What's it got under the hood?" Nonetheless, stuffing a big mill into a car with a ...

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 ...

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 ...

When it comes to fixing your differential, there’s bad news and good news. The bad news is that differential replacements are expensive, often ranging from $2,500 to $6,000. The good news is that both ...

Late-model Ford owners are a fortunate bunch. It's easy to make your Blue Oval machine stomp the competition with copious horsepower, and these days the transmissions aren't too bad, either. The last ...

Jimmie Johnson's season ended in the garage at Homestead-Miami Speedway with a 36th-place finish Johnson was given a penalty after a lug nut was left off the left rear tire on a lap-213 pit stop ...