Papa Smith

I need extreme advice.I have a 92 jeep cherokee and the 4.0 is constantly giving me trouble and I want to change the 4.0 out for a small block chevy.Will I need an adaptor to connect it to my factory tranny,and if so what kind?

BRN2KL

Yes you will need an adapter for the tranny. Why not swap the tranny at the same time to a GM unit? TH350, TH400 or 700R4. The R4 has overdrive if you spend anytime on road you will appreciate the extra gear. Advance adapters will have the engine to tranny adapter that you need.

xjmarc

If the small block is built at all the stock tranny won't hold up, neither will the axles. Plan on all new mounts, radiator, motor, tranny, possibly t-case and axles. Plus all the little things that go with putting a motor somewhere it wasn't made for.

SeriousOffroad

If your tranny is an AW4 you'll need a new tranny. There are no adapters available to mate an SBC to an AW4.

jbsjunk

Mine. https://www.cherokeeforum.com/f46/xj...o-long-108404/

Diesel Dan

might as well swap in a whole GM 1/2ton driveline while you are at it.

Jeeptunes

thats what im saying im curious as to what the fuel milage is like cause if its anything like the jeep i would do it lol

cruiser54

How much trouble can a 4.0 give you that would be more trouble than doing a drivetrain swap?

SeriousOffroad

5.3L in mine.
I get roughly 18mgp on the highway.

Gee oh Dee

Thats what I was thinking.

Diesel Dan

IDK for him but I'd kill for an L33 in my XJ!