ATK Re-Manufactured Cylinder Head (0331)

[Missourian]

Does anyone have experienced with this ATK Re-Manufactured head?

I have just purchased an ATK Re-Manufactured Jeep 4.0L cylinder head of the needed 0331 type. This is going onto a freshly STROKED short-block engine with a lot of cabbage spent building it. I am concerned that they may be rebuilding salvage yard 1999 - 2002 0331 castings 4.0L cylinder heads, resulting in the same problem I am having to replace after the head cracked thus damaging the engine.

[1992Rotbox]

I don't have any experience with it, but I did look at hard it before I turned and bought a Clearwater cylinder head for my 00 XJ.
For your ATK head, look for the TUPY in raised letters between cylinders 3 & 4. The Brazilian TUPY casting is from 2002-2006.
ATK does not specify if they avoid the 00-01 years of 0331 heads. Made me nervous.

You may end up with a good reman 0331, but if its a 00-01 survivor, I'd occasionally peak into the oil fill hole looking for tiny coolant droplets draining back on top of the oil.

[Missourian]

Received the new cylinder head from ATK via UPS, yesterday afternoon.

Mine, at least, does say "TUPY" between valve spring seats of cylinders 3 and 4. I am relieved and hopeful to not have any problems with this head. I bought this through http://www.4WD.com as a complete re-manufactured head...

BTW - there is a $175 core charge not mentioned in their catalog/on-line.

[AGM114]

Is the ATK head good to run with an aftermarket cam or is it built to OEM specs? If it is OEM specs I assume the springs would not fair well with the increased lift and spring pressure of an aftermarket cam, right?

[Missourian]

My build is the "Modified Poor Man's" STROKER. The re-manufactured ATK #0331 casting 4.0L head is not ported/polished and I am using a stock profile Melling camshaft with it.

I am sure you will have to modify the head/valvetrain to accommodate increased lift.