The Jeep Cherokee XJ is a pioneering SUV that delivers commendable performance and off-road capability. More than 3 million Cherokee XJs were manufactured during its production run. However, when the XJs rolled off the production lines, they were built primarily for the street. As a result, XJs need crucial modifications and high-performance upgrades to make them better for off-road duty.
Over the last 40 years, millions of Chrysler, AMC, and Jeep vehicles have used these differentials, propelling these high-performance vehicles to victory on the street, in drag racing, and other applications. Chrysler used the Dana 60 and BorgWarner Sure-Grip high-performance differentials in the Challenger, Charger, Barracuda, Super Bee and many other renowned Chrysler muscle cars. These differentials have been tied to historic powerhouse engines, such as the Chrysler Magnum and Hemi V8s in stock car, drag racing, and other forms of racing, making history in the process. Jeep CJs and Cherokees have used the Dana 44 and AMC 20 and put these differentials under tremendous loads, which often requires frequent rebuilds. After years of use, these differentials require rebuilding, and of course aftermarket suppliers offer ring and pinion and other parts to upgrade these axles.
The Jeep Cherokee is one of the most popular and rugged sport utility vehicles in history with nearly three million sold. While many have used the Cherokee for daily transportation, throngs of off-road enthusiasts have chosen the Cherokee for navigating over the toughest terrain, climbing rocks, trail riding, and much more. Although the Cherokee is wildly popular, these 1984-2001 unibody models have much room for improvement to become the best off-road vehicles.
The venerable Jeep 4.0L in-line 6 engine has powered millions of Jeeps, including CJs, Wranglers, Cherokees, and Wagoneers. The 4.0 delivers adequate horsepower from the factory, but many off-road drivers want more horsepower and torque to conquer challenging terrain, which means these engines are often built and modified. The Jeep 4.0, or 242-ci, is affordable, abundant, exceptionally durable, and many consider it one of the best 4x4 off-road engines.