are tj 4.0 block and 95 4.0 blocks the same?

[tdpb2008]

i am wondering if a 95 yj block and a 97 tj are the same if not what makes them different?....i have a 95 4.0 block i want to stroke and put in my tj but just wondering if i can swap tj parts to it or what do i need for this swap in these generations?

i need a 97-98 engine harness with pcm if anyone has one to sell

need some help guys....im pulling the POS 4cyl out and putting in a stroker!!!

let me know what you guys think or if you have any experience with this

[Bodo]

Do you have casting numbers? You should be OK.

1991-1995
C/N 53008405

Cast iron block, left side has five 2" cast plugs. Second bolt from pan rail on right side of timing cover is a through hole. Oil filter mounting on left side of block is pointing downward. The upper (block side) bearing-locating tab was moved to the center of the bearing register. Two additional bolt bosses added to block where fuel pump would sit (lower right front) for coil mount.

1996-1998
C/N 3010341, 53010449

Cast iron block, left side has five 2" cast plugs. Second bolt from pan rail on right side of timing cover is a through hole, coil mount bosses lower right front. Basically it is the same as the 1991-'95 blocks except for dowel pins in the deck for head and block alignment. Oil filter mounting on left side of block is pointing downward. Uses long main bolts and stud girdle. Has "NVH" on side to denote block strengthened for "noise, vibration and harshness" reductions (no visible differences).


http://www.enginebuildermag.com/Article ... riend.aspx

[YJason]

IDK about the difference in blocks but if your TJ is going to be a manual shift trans you can just buy a 97 6 cyl TJ ECM add 4 wires for the extra 2 injectors and use your exsisting harness**.

** I have only read that this can be done and have had others tell me it can be done, but not from personal experience.

[1bolt]

Moved to basics; Yes they are the same. Most years of 4.0 blocks from the first (or even going back to 258 and 232 blocks) to around 2001 are functionally identical. Only the last few years have any real differences, and even these in my view are basically the same, only the later grand Cherokee blocks require significant adaptation to put in a TJ YJ or XJ. Different accessory placement (Alt and AC compressor) or serpentine belt lengths do not incompatible make (like my Yoda impression? Different motor mount brackets just barely qualifies in my book.