danmojo82

Cummins 4BT Diesel
*Horsepower - 105 hp @ 2,300 RPM #
*Torque - 265 lb-ft @ 1,600 RPM #
#Common rating, though horsepower & torque ratings may vary by application

Ford 3.5L V6 Ecoboost
* Horespower - 365 @ 5000 rpm
*Torque - 420 lb-ft @ 2500 rpm

Jeep 3.8-Liter V6
*Horsepower - 202 @ 5200 rpm
*Torque - 237 lb-ft @ 4000 rpm

Jeep 3.6 Pentastar
*Horsepower - 285 hp @
*Torque - 260 lb·ft @ 4,800 rpm

Jeep 2.5 CRD
*Horsepower - 140 @ 4000
*Torque - 253 @ 2000

Jeep 3.0 CRD
*Horsepower - 218 hp @ 3,800 rpm
*Torque- 377 ft/lbs @ 2000 RPM

Dodge 5.7-liter HEMI V8 MDS dual Variable Valve Timing
*Horespower - 390 @ 5900
*Torque - 407 @ 4000

LS1, 5.7L
*Horsepower - 350 @ 5,600 rpm
*Torque - 360 lb-ft @ 4,400 rpm

LS6, 5.7L ('01 Corvette)
*Horsepower - 385@6,000
*Torque - 385@4,800

If it were cheaper I'd honestly go the ecoboost route, its hard to beat its torque to RPM ratio not to mention the HP. But other than that, I'd go a diesel option.

B 1000

The jeepspeedshop is pretty awesome. LS engine would be a nice option so long as it's cheaper than the HEMI and can pass CA smog.

I'm not oposed to diesel at all actually, but my Jeeps mainly see high speed desert or dunes.

JdTms11

Also allot of states require the engine you swap in to be from the same make/ manufacturer and of the same model year, if not you won’t be able to register it and drive it on the road.

B 1000

From what I've read on C.A.R.B. for CA, it just has to be the same type of vehicle. Like an SUV to an SUV or a truck to a truck. No corvette engines in Suzuki Samarias

Either way, my original post was questioning a WJ engine in a JK so it would still be same manufacture.

Jester116th

True, But then whats the point of those swaps if you can't get it licenced where you live?

ArmedSuspect

i may have missed it somewhere but.....


what does it take to put the 3.6 Pentastar into an older JK? if it's a reasonable swap, i'm all over it!

B 1000

In all honesty, if I'm going to put in the effort for a swap then I'm putting in an 8cyl. The new 3.6 is probably nice, but the gain probably doesn't warrant the swap.

ArmedSuspect

the thing for me would be if the 3.6 swap is a relatively cheap process... i.e. buy long block, install. i don't know if it's that easy but it sure would be nice to know....


i'm not willing to pony up for a hemi, too much money. way more expensive than it's worth IMHO.

B 1000

Which is exactly why my original post was regarding the other Grand Cherokee engine. I totally understand what you're getting at with the 3.6, but if the swap is going to cost more than 10k anyway, I would just like to see what else I can do that would yeild more power.

Yankee

The hemi is a decent V-8, the LS engines are sweet. But the main reason people are putting the above engines in is that it has been done before. Someone has went through the pain and even developed DIY kits. Which means the Jeep is not sitting in the garage for months while all the electronics, fitment, drivetrain, accessory problems are figured out.

Instead, with a kit it can be up and running in a couple weeks or less, with everything working like factory. A/C, ABS, guages work, no engine codes. And it can be done for 10 grand or less if you do it yourself. Still a chunk of money, but it is quite a difference.

No doubt someone could, and will, or somewhere already has, put many other engines in a JK. But they probably spent months figuring it out. Chasing computer codes, hunting for adapters, etc...

Many people do not have the skills, time, or desire to do that. Especially if the JK is their daily driver, they do not want it to be inoperative as a grand experiment for months. They would rather pony up the money and get er done.