1957 Pontiac 347 question

Hello everyone,
I am building a 347 for a 1957 Pontiac Chieftain. I have a couple of spares but the one I am building is a little different from the spares. On the spare motors there is a breather that is pinned to the block just over the center of the cam shaft and it mates with another baffle just under the intake manifold. The one that I am building has the baffle BUT there is no breather that gets pinned to the block...the other blocks were drilled from the factory for it but this one is not drilled. I guess my question is, is there a different type of breather or was this a later model motor that did not require the pinned breather? Any help with this would be a great help.

Thanks,
Chris

 

Try Pontiac-50's site. They know all the good stuff.

 

Uncle Don,
Would you happen to have the actual website? I googled Pontiac-50's but I came up short....Thanks!

 

Try this

http://autos.groups.yahoo.com/group/pontiac-1950s/?v=1&t=directory&ch=web&pub=groups&sec=dir&slk=2

Pretty good knowledge about those old Pontiacs

 

I would like to see some photos...