anything is possible with enough money, that said, i've seen LSx swaps in jeeps, 5.9l swaps from magnums...sure there are bigger but really lots of power can be had by either of them...

as for the 6, yah you can do a 4.6-4.7 stroker motor and with cam and head work, you can easily get the thing up to 300hp+

another thing you might need to think about, with more power you will need to upgrade the rest of your drivetrain...axles, tranny...

 

Badbird17x put a 5.3 ls1 in bruiser. I know there's another ls swap over on mall crawlin.

 

Stroke it, blow it, or both. Either way, you have the power of the v8 minus the weight.

 

Weight difference between the I6 and V8 is rather small, <100 pounds I believe.

 

isnt the 4.0 actually slightly heavier than the V8??

 

isnt the 4.0 actually slightly heavier than the V8??

Nope about 200 more

 

To upgrade the drive train is the v8 a beefier drive train? would that work? or should I look for some after market stuff?

 

V8 swap is way more work than its worth. better off building a stroker I6, you can get close if not more power than a stock V8, and its all bolt in.

 

Tranny won't hold out long if you have more hp then a v8

 

I would take a 4.6 stroker over my v8 anyday. Mine has a little work done but I have driven a friend's TJ with the golden eagle stroker. It was awesome!

 

Yea, but your talking $3500 not including shipping/install/incidentals for one of those engines, for that much you could be running a built and stroked 408 or a S/C'd 5.2. The other thing is it puts out less torque than a stock 5.9 and the extra 20hp is only useable in an 800rpm range, all of it above 4000rpm.

 

to build the stroker I6 is that just reusing the block I have and just bolt on the parts?

 

i think you source a 4.2l crank and rods, (probably new pistons and have it bored out just a little to clean up the block) and that should get you to a basic 4.6l if my memory serves right. this gets you the torque from the 4.2l and the hp of the 4.0l...

once you get a different cam and some head work done thats where the majority of the power increase is

 

You would be better off starting with a v8 then stroking that. No comparison. Even with bolt ons like PCM tuner, throttle body, headers, exhaust, ported kegger mod or M1 intake, cam, ect. you will have as much torque or more than a stroked 4.0 and it would cost less. Then you could stroke it and it would be a raging beast. Or over bore it. Or you could spend 4 grand and supercharge the V8. You could drop a crate 360 in. Either way you will have a better platform to build more power from for less money. Either way you will probably have to beef up the transmission for either motor. The 4.0 has a pretty weak tranny.

There is a guy on here "TurboTPI" I think is his name. He put a turbo on his 4.0. Looks quick and sounds cool.

 

Thanks guys, beefing up the transmission, does that involve using a different tranny or is there internal parts I can replace to accomplish this?

 

stroke it. Its expensive but worth it.