Originally Posted by Bad340fish
I read somewhere that the heads that have the extra ribs around the lower head bolt holes are later castings, I do not know how true that is.


Yes the support ribs were from a revision. Older versions also wouldnt have had the dual bolt pattern. Now, what constitutes "early" vs. "late" is up for debate. Ive never gotten a straight answer on that and W2s were produced for a long time.

Also looks like someone has ground away the "Mopar" and "W-2". Maybe to disguise them.

Last edited by usp4u; 12/17/20 04:37 PM.