Ok. I came home from work and pulled the head on the 194 engine. (It is definitely a 194, has bore size of 3.56") I compared it to another head that I had off that came off a '77 chevy 292. The chambers do look to be smaller than the 292 one and the valves appear to be either the same size or extremely close in size. I couldn't get my calipers down in the combustion chamber of the 194 heads to get a definite measurement due to the smaller CC. I put pictures at these links. 194 head is on the left. The one with some rust scale is the 292 head.
http://i18.photobucket.com/albums/b117/hotrodderguy/big%20roadster/20150721_180200_zpsgs05zqik.jpghttp://i18.photobucket.com/albums/b117/hotrodderguy/big%20roadster/20150721_180208_zpsgfrehn2m.jpghttp://i18.photobucket.com/albums/b117/hotrodderguy/big%20roadster/20150721_180215_zpsura6dusy.jpghttp://i18.photobucket.com/albums/b117/hotrodderguy/big%20roadster/20150721_180302_zps4hpgmnsl.jpgHere's some other weird stuff (maybe). The 292 head pictured, I believe is the stock 1977 292 head based on comparison to the date code of the head and block. The casting number 331184 is not listed in any of the charts I have seen as being used on 292.
I found a similar issue with the other 1965 292 that I have. It also has close date codes between the block and heads and its head casting number (3864886) is not listed as being used with the 292.
The other engine I have is a 250 out of a 1967 Nova. I was a factory option motor. I'm positive that the head is the original head to the engine because the car's history has been extremely well documented and the original owner even still has the dealership window sticker listing the options. The head on it has a casting 3895054. I can't even find that casting listed anywhere.
So maybe some powers that be could do some updating on those casting number charts.....
My other question is: did the 194 engines in 1967 all have flat-top pistons?
http://i18.photobucket.com/albums/b117/hotrodderguy/big%20roadster/20150721_180631_zpsupm75ovp.jpg
