Hey Group, I've got a 84 CJ7 4.2 with a tired engine. I have the opportunity to pick up a roll-over 91 Cherokee 4.0, 4wd. I've been toying with the idea of putting a 4.0 head on the 4.2 but am not crazy about plugging cooling ports on the block. Maybe a whole engine swap is in order. I would love to get the horsepower that a 4.0 would deliver but I don't know how much re-engineering I'm gonna have to do from the Flywheel back. The Cherokee has a AX15 tranny, not sure about theTC. Would my T5 bolt to the 4.0 bell housing? Is the input shaft the correct length? Is the block the same length as my 4.2 or do I have to relocate motor mounts and/or trans mount and skid plate? I know the T5 is not a great tranny... would I be better off using the AX15 and my current 300 TC or is that even possible? What do you guys know that I am missing? Is there a website that covers this kind of swap? I thank you in advance for any and all feedback. Charles E.
91 Cherokee 84 CJ7 81 DJ5L- posted
18 years ago