TJ BLOCK Interchange

[Cannonball]

Im looking to do a 4.7 stroker in my 2004 Rubicon TJ w/42RLE auto trans. I have heard many 4.0 donor blocks wont bolt up or have figment issues. What donor Engine blocks will fit and how do I tell what they are if they are out of the vehicle? Does anyone know? Casting numbers and or date codes? Where do I find them.

Thanks in advance because I have searched al over and cannot find any interchange info for the late TJ 4.o's.

Im not tearing down the old engine its only got 47 K on it and I'm saving it for my other TJ.

Cannonball

[duck454ss]

I'm using a 97 block in my 2005 LJ...... if you contact Brown Dog he will make you a set of motor mounts that will allow for your fit. when my engine finally goes in thats what i'll be doing.