When it came time to give our trusty '91 Comanche a kick in the power department, we knew we didn't want to do an engine swap. The 4.0L was lacking in power, but it fit the truck well: anvil-reliable, ...

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 ...