Originally Posted by usp4u
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.


Very likely they were intended for FAST racing or another class that requires a "stock" appearance.

To me I would say that any W2 head with the external ribs is a later, revised casting. As we know, they often had the closed chamber as well, although there were some of the later castings that had an open chamber as well.

Alan Jones