This is going into my 2000 xj to replace my motor with the cracked head. Any info from anyone who has done this would be great. Thanks.

OK I am tearing my hair out trying to figure all this stuff out. This is what I have so far...

94 Jeep 4.0L (From what I can tell its a non HO)
Pre 1981 4.2L Crank and Rods

I am planning on using an OEM camshaft, pistons (oversized), lifters, pushrods, rockers, valves, etc....

The problem I keep running into is that everything says I need a ported HO head. I don't have that, will mine still work? I plan to put my 2000 XJ intake manifold onto the 94 head and run headers for the exhuast.

The other issue I have read is that the 2000 xj computer has a hard time running anything with any significant performance mods. They recommend a "unichip" which is another multi-hundred dollar investment. Has anyone run into this?

I don't want to be able to smoke my 32" tires. I just want a bit more power than a stock motor. I am planning on rebuilding this 94 motor anyway and I am about to say screw the whole stroker project. I thought I had a pretty decent grasp on how motors work but this is all giving me a headache! Please lend me some knowledge.

 

Sorry for the thread title. Lol. My phone auto corrected for me!