Getting a 01 Cherokee sport 6 cylinder 4.0 but the block is cracked. Will a block from a 1996 Cherokee straight 6 engine work to replace the cracked 01 block?

 

Block yes. Head no.

 

So I'll need the head from the 01?

 

Yes, and they are prone to cracking.....

 

You can use the 1996 head, however you will need an adapter to make the exhaust ports match up. https://jeepexhaustadapter.com/

Aside from that, you can get a head from a 2002+ 4.0L (WJ or TJ) that doesn't crack, or buy an aftermarket one.

But, if you've got a solid donor, the adapter makes a lot more sense.

 

This might help with some of the stuff you will need to do. I thought it was an excellent write up.

https://www.cherokeeforum.com/f46/19...thread-213668/