autoevolution

1993 Jeep Cherokee XJ Gets Its Engine Rebuilt in Minutes, It's Time-Lapse Magic

In the early 1980s, the Jeep Cherokee XJ was launched, and it was the company's first all-new design in almost two decades. It was also the first American off-roader with a unibody design. Those ...
SlashGear

How Much HP Does A 4.6L Golen Jeep Stroker Engine Have & How Much Does One Cost?

Chad Golen founded Golen Engines in Lowell, Massachusetts in 1992, specializing in small block Chevy performance engines. Ten years of success allowed Golen to purchase the equipment, dynos, and ...
Road & Track

Getting 400 HP Out of a 4.0-Liter Straight-Six Jeep Engine Requires a Ton of Work

The 4.0-liter straight-six made famous for its use in Jeeps in the Eighties and Nineties is known for many things, but power isn't one of them. It's a workhorse motor, meant to take abuse and run ...
Motor Trend

40 Percent More Power For A Jeep 4.0 Inline-Six

If you don't have one of the old and trusty 4.2L- or 4.0L-equipped Jeeps you probably had one in the past or have a buddy with one. So what do you do when you want to get some more power from a ...