ok so my 1990 xj has 300,000ish miles and still runs good. I just had a newer transmission put in along with a rear main seal. The engine is still good to go right now but it is enevitable that this thing will quit and that will probably be pretty soon. I dont expect more than 50,000 more miles out of her. So I have done some searching on this forums and am pretty sure I am going to go with a late model HO 4.0. So here is my question. I keep seeing that you cant just bolt in the HO4.0 and I will have to use my renix head in order to keep the headers in line? What if I get cutom headers built? If I were to say find a late model XJ and yank the whole motor out including the TB and all of the electronics and everything will that bolt in with custom headers? I am kinda new to this so what is a short block and what is a long block? I dont think I want to do a stroker as that is even more money and even more work. I will not be doing this myself as i dont have the room or the tools or really the ability to do so. My goal is to get my jeep running so great that I would not think twice about doing long distance cross country road trips and not worry about breaking down in po-bunk Alabama with a busted up jeep. Another reason for not strokeing it is I want to keep the good gas mileage and if I have a stroker and the power I know I would not be able to keep my foot light on the pedal.
So some advice? thanks a bunch. This forum has taught me more about my jeep and basic mechanical workings that I thought it would.
-Dillon
So some advice? thanks a bunch. This forum has taught me more about my jeep and basic mechanical workings that I thought it would.
-Dillon