00xjalex

I'm pretty sure I blow my motor last night and thinking maybe it's time to upgrade
Worked 4.0L maybe bored a little over decked and higher the conpretion?
Ford 302,351?
Chevy motor?
Anyone have any good ideas on what's a nice swap easy bolt up with maybe just the change of a bellhousing or tranny not looking to change all the wires really or start shortening or lengthening the drive shaft
Iv got a 2000 Cheroke
3 inch lift
4.0
Aw-4 tranny (I know sucks it's auto)
Crysler 8.25 rear and a D30 front

J91gt83b

I have a rebuilt 4.0 with some bolt ons. I'm thinking of throwing my 351 Windsor with a top end kit in it. (Trick flow track heat heads, Trick flow stg 1 cam Edelbrock vic jr intake with a Demon carb . I feel the 4.0 is a great motor and has never let me down. Even sucking in water, some time draining the cylinders out and it still runs great to this day. For hp/tq reasons, is why I wanna switch.

Do you have any upgrades done to your rears? It will play a big factor in breaking more stuff as I'm always breaking stuff and I have a semi built Dana 44 front axle and a built 8.8 explorer back axle...

00xjalex

If I go up in power I'm gonna do an 8.8 swap

Diesel

4BT TT'd

00xjalex

If I go diesel I wanna go big like a power stroke 5.9 cummins that direction

SqueakyT1O

when that time comes, i plan on strokin out my 4.0

jcwclm

Have fun snapping your unibody in half. A 4bt has enough potential for pretty much any type of xj you want to build.

Diesel

A 4BT can easily mangle the frame rails as well.

Im not a rude person, but that statement was just plain idiotic.

jcwclm

True, but not nearly as easliy as a 5.9.

SqueakyT1O

a 5.9 is well capable of 1000+ hp.....it would make a jeep into a pretzel

Diesel

Agreed

A 5.9 is capable of 2000hp, whether or not you still consider it a "diesel" engine at that point is up to you.


A 4BT with a single HY35 can put out more power than a stroked 4.2, and a 4BT with a aftermarket turbo, tuner, pipe and intake can easily out do any stroked 4.0.

SqueakyT1O

true....but 1000 hp is alot easier than 2k hp....i've seen heads lift on most apps above 1000hp....i'm no diesel mechanic, but i've helped with a few head gaskets on a 5.9....end point....a 5.9 is great for a tow rig, not a cherokee

Diesel

SqueakyT1O

ClaytonXJ

Even a 4BT is out of place in a wheelin rig in my opinion. Way too much nose weight. I've seen diesels swapped into mud trucks before and it's about as effective as putting a snow plow on. Even just 50-100 lbs on the front end can have a huge impact on how a vehicle works.

Any small block would be really cool. 302 would be the lightest and still make plenty of power for a wheeler. You can easily make 350 fwhp with a mild 302 and easily 400+ if you spend the money on a 331 or 347 stroker.

I have the stock efi 302 out of my mustang sitting in the garage just begging to be put in my cherokee. Only thing that stops me is I still want to run 6 cyl classes at mud drags and hill climbs.

I was thinking Chevy 4.3 would be pretty cool. As bulletproof as a 350, still a 6cyl, nice and short so it can be set way back in the engine bay and they can make pretty decent power with Vortec heads and a mild cam.

Just my opinion.