Just to bring this back from the dead.

I have a 4.7HO from my 02 Grand sitting here with a dropped valve (spring craked, dealer has never seen that before) I'm currently putting in the new longblock that I got from a scrap yard, so when I'm done I'll have this complete engine.

I have an 06 3.7 limited Liberty

Anyways.

What are my computer options? I've done most of my modifying to pre OBDII cars so I don't have a lot of experience with the NGC.

I didn't get any computer with the new motor since I didn't need it. I'm sure I could go find an ECU somewhere.

How do I know which trans is in my libby? It is the 4X4 with the full time 4 wheel option.

So, any opinions? I'm doing the swap in my WJ myself, and have modified other cars quite extensively, so my aptitude is not in questions, but I also like to get other thought and info as much as possible so I'm not reinventing the wheel.

Thanks!!

Bob

I have the engine harness, just not the ECU.

That sucks about the trans.

Well, I still want to keep this as an idea, buying the new 4.7 for the WJ set me back a bit so it will take awhile to fix the old 4.7 and then get the trans. Plus my other money pit project.

Thanks for the input though.

Bob

I wonder if the jump from 210HP & 235 ft lbs to 250HP and 300ft lbs would be worth the time and energy….40 hp and 65 ft-lb’s……Hmmmmmm……

There's no replacement for displacement; throw a supercharger on the 4.7L

Under an unusual set of circumstances, I happen to have a very, very totaled ‘01 4.7 Dak truck that starts and runs.....I also have a ‘02 Liberty 2WD 3.7 that has dropped a cylinder at 198K miles...(actually maybe two…)..But the body, paint and interior are remarkably clean and serviceable on the Liberty….

Has anyone out there actually done this?? I have both sets of factory service manuals but as you can imagine, that is no help as far as dimensions and such….I wonder if the jump from 210HP & 235 ft lbs to 250HP and 300ft lbs would be worth the time and energy….40 hp and 65 ft-lb’s……Hmmmmmm……

I understand the engine controller and engine harness may plug and play…maybe….Would the hood close?? the accessories and accessory drive looks compatible….I suppose the tranny could just follow the 4.7 right out the front of the dak and into the Liberty as an assembly..….I guess the tailshaft housing is the same ?? ….

Gentlemen….Has anyone actually done this??

Well...the way I'm looking at it is that if you did stuff a V-8 in a libby,the engine swap would probably be the cheap part.I think the biggest cost would be Tranny,both diffs,all new drive axels and drive shaft,and anything that won't even handle big tires,much less a real engine.My guess is that once you got all of the bugs worked out,you would have a 50,000 dollar Libberty.Of coarse I'm speaking of 4x4 transplant,the 2wd might not be that bad.And if all the figures from doing just a SFA are correct(20,000 to 30,000)it might even be more than that.I think I could find a better way to invest 50,000 +.

Ron

The 4.7 V-8 swap is next in line for my KJ after the SFA swap in a few months,and I'm 100% sure my drivetrain will handle the extra power(and then some),plus I have the 45RFE so it will handle the torque of the V-8 better then the 42RLE(really will hold up after I mod the tranny with a better TC and clutches).