There are lots of methods to creating more power in 4.0L Jeep engines. Some are easy bolt-on upgrades, while others require extensive modifications and engine ...
We don’t expect you to go digging into your ’07-’11 Jeep’s 3.8L to make major modifications like cam swaps or head porting. Heck, we’ve been told by Jeep engineers (as in the guys who actually build ...
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