COMP Cams 1964-1998 Jeep 4.0L Xtreme 4x4 205/213 Camshaft X4 250H-13The Jeep 4. 0L is used for many different tasks, from daily driving to rock crawling and even hill climbs. COMP Cams has released grinds that tailor to some of the most common applications of this proven motor. These camshafts feature new lobe designs specific to the 4. 0L that allow for more duration and valve lift within the constraints of the 4. 0L design. This results in better torque and mid range power for both carbureted and EFI applications.