392 Engine Swap

[CarbonSteel]

Just dreaming a bit here, but other than the engine, cooling system, exhaust, and computer, what else is needed to bolt a 392 into a JL where a 3.6L currently resides? I am speaking to pulling a 392 out of one Jeep and putting into the other.

I am assuming the frame is the same as is the transmission. Any other huge hurdles to consider?

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[DavidArmen]

The transmission in the 3.6/2.0 is the ZF8HP50. The transmission in the 392/3.0D is a ZF8HP75.

The 8HP50 is capable of handling up to 500Nm (369ft•lbs) of torque.


The 8HP75 is capable of handling up to 750Nm (553ft•lbs) of torque.

The 392 has a max torque rating of 637Nm (470 ft• lbs).

So unfortunately, no, the transmission isn’t the same.

Also, the frame is different too. They had to make quite a few modifications to the front half of the frame to fit the engine, as well as the engine mount placements.

 

[Jjirish]

This is your sign.
Do not.

 

[CarbonSteel]

Yep, as I said... dreaming.

Thanks guys.

 

[MSparks909]

Yep, as I said... dreaming.

Thanks guys.

America’s Most Wanted 4x4s does these swaps all the time. Not cheap but very doable.

 

[Ct_Formula]

Yeah they talk about $40-80K for a true conversion, just trade yours in on a 392 XR and don't look back.

That's what I did and 197 days I'm STILL waiting for my dang delivery GRRRRR

 

[CarbonSteel]

Yeah they talk about $40-80K for a true conversion, just trade yours in on a 392 XR and don't look back.

That's what I did and 197 days I'm STILL waiting for my dang delivery GRRRRR

Well...I think I have too much in mine to look back now. I just wish the 3.6L had about 350HP and 325TQ.

 

[Ct_Formula]

That's what I thought, I had $70K + into mine.

I said to Hell with it, ya only live once!

 

[CarbonSteel]

That's what I thought, I had $70K + into mine.

I said to Hell with it, ya only live once!

Yeah; I wish I only had 70K in mine. If the Tornado comes to pass, I may be forced into a new one, otherwise, I will keep the Grinch...

 

[Dyolfknip74]

Well...I think I have too much in mine to look back now. I just wish the 3.6L had about 350HP and 325TQ.

Sounds like supercharger whine is in your future.

 

[Ct_Formula]

Yeah; I wish I only had 70K in mine. If the Tornado comes to pass, I may be forced into a new one, otherwise, I will keep the Grinch...

Yeah I hear ya, if mine was auto I would have just kept it. But hangover mornings in new england traffic pushed me over the edge.

That was after buying it for $23 K so the grand total of $93K and such a deal when selling it!!

 

[CarbonSteel]

Sounds like supercharger whine is in your future.

I have been contemplating it and looked at:

-- RIPP (top contender)
-- Hamburger (2nd place, but the alternator relocation is a bit of downer)
-- Edelbrock (even though it's likely best overall, the loss of the oil fill is a non-starter)
-- Magnuson (completely out, too much BS with its tunes)

Procharger is the only one I have not looked into yet.

 

[Wbino]

Just get the pipes and hood, no one will know the difference.

 

[Bzinsky]

Just dreaming a bit here, but other than the engine, cooling system, exhaust, and computer, what else is needed to bolt a 392 into a JL where a 3.6L currently resides? I am speaking to pulling a 392 out of one Jeep and putting into the other.

I am assuming the frame is the same as is the transmission. Any other huge hurdles to consider?

The 4xe also has an 8p75 like the 392.

The only difference is the 4xe has a 130hp electric motor instead of a torque converter.

So if you really want to do something amazing.

392 swap + 4xe trans and battery.

600hp 392 plug in hybrid!

 

[NOIDEAWIAM]

This is the whole reason I sold my JKUR recon for the 392XR. I wanted the V8 and the cost to insert one was higher than just building onto the 392. The cost along with the warranty....

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