4.7, 5.2 or 5.9 new jeep adapters?

[jaz459]

has anyone heard of an adapter for this conversion?

[chrism]

Novak is working on adapters and engine mounts for the Mopar magnum engines.

But I don't see why you would need an adapter of any kind. You could just swap in the whole drivetrain out of a dodge pickup or grand cherokee. Use a Chrysler 727 if you didn't want to go with the OD tranny.

A guy who swapped a 5.2 into a CJ told me that Dodge truck engine mounts work great with just a little modification.

[Andrew]

The mounts are the EASY part of doing this kind of swap. If you intend to use the MOPAR powertrain control electronics with EFI and electric tranny control etc etc etc you start running into problems. There is not too much aftermarket support for mopar software/electronics that I've heard of. Chevy's have much more. There are other parameters such as the park/neutral switch, torque converter clutch (TCC) wiring, anti-theft, etc. All of these functions are wired into the engine management electronics. They seem easy but hooking them up without some kinda of factory schematics and understanding of how they work is a nightmare.

I know from personal experience that late model GM EFI is digital and you can program it from a laptop with the right software. You can also turn off the anti-theft, emissions etc. I have this setup on my 240z with an LT-1. It rocks.

[jaz459]

so the idea of having the style and durability of a FSJ connected with the power and efficientcy of modern technology would be a pretty nasty project? has any one heard of this conversion being done? would a complete drivetrain swap be a better plan?

[Andrew]

No its not hard. But just be smart about it. Also don't plan on doing it in a weekend. It took me a year to swap a 350 into my datsun and thats alot smaller than a Jeep. :D Here is what I plan to do. RAMJET FSJ if you read this please chime in.

1. Advance Adaptors and Novak make 350 to FSJ mounts.
2. Use the whole chevy system from t-case to waterpump. (eliminates the need for more adaptors, and if you want to go with a really modern setup you have to use the package)
3. Custom tranny/t-case cross member.
-- Jeep Crossmemeber+Chevy mount+welder=done
4. Custom driveshafts
5. Use the GM accessories. Chances are your Jeep has GM stuff on the current 360 so you'll need some new hoses but nothing drastic.

Some issues I have to research:
1. Oil pan clearence
-- shouldn't be a problem since IFS chevy and post 1980 FSJ's have driver drop pumpkins
2. Steering shaft clearence
-- usually solved with a good set of custom headers (I like Sanderson performance)
3. Exhaust
-- A single 3" should be enough and clear everything
4. Fuel lines
-- You'll have to put in a return line or redo everything if you're going with EFI

[chrism]

I disagree...the Mopar stuff is no more difficult than Chevy or Ford. There is no one making custom harnesses for them but as long as you get the harness from the donor rig and have a wiring schematic you should be all set. And as long as your engine is 93-95 you do not have to deal with OBDII or electronic trannies.

People swap Jeep 4.0's all the time. The magnum engines are not any more difficult.

But this is not for the fient of heart. I have swapped several EFI engines into non efi vehicles and there are always issues to overcome. If you are doing it for the first time stick with GM or ford engines. They are the easiest to get support for.

[wagdriver]

I own a 95 Dodge 2500 with a 360, and have often wondered what it would be like to have that drive train in my 88 Grand Wagoneer. Just dreaming! I like the Dodge engines, for me they have always been bullet proof. All of these swaps have there pluses and minuses. It is when you start saying "all you gota do" that the trouble starts. Any thing can be done, you just have to be willing to work out the differences and live with the compromises that go with them. ;)