Four-cylinder engines have long been seen as inferior to powerplants with more cylinders, such as inline-sixes and V8s. But ...

Last month, you got the skinny on stroking the 4.0L Jeep inline Six. Now you'll get to see it in action and learn about all the goodies we bolted onto the outside. You'll see and hear varying numbers ...

The Jeep 4.0L engine found in TJs, XJs, ZJs, and WJs is a trusty powerplant, and the '91-and-newer high-output versions make respectable power for a long time if well cared for. We recently ran across ...