While some of you might find this difficult to believe, there are aficionados out there for whom the 707-pony factory output of the Jeep Grand Cherokee Trackhawk is simply not enough. Of course, there ...

What started out as a simple day of dyno testing left us with a bunch of things that make you go, "hmmm." We headed over to AEM's Hawthorne, California, dyno facility to put a Brute Force intake on ...

Remember when Jeep thought that the majestic SRT incarnation of the Grand Cherokee, with its naturally aspirated 6.4-liter HEMI isn't enough and decided to Hellcat the SUV? Well, Hennessey Performance ...

Last week, we shared a short video of Hennessey’s Jeep Gladiator Maximus 1000 being put through its paces at the company’s facility. Now, it’s time to see what this insane pickup truck can do when ...

Over the years, Jeep's 4.0L engine underwent a few changes here and there, but nothing drastic. Despite the similarities, many still think of the '91-'95 XJs as the fastest six-cylinder-powered Jeeps ...