No replies so far from others so I'll share what I have just learned.. mostly from the Santucci Chevy inline 6 power manual:
The 292 has 6" tall sidecovers, tall deck, and the passenger side motor mount is between the oil pump and the distributor.
230 and 250 have 4" tall sidecovers, lower deck and the passenger side motor mount is almost lined up between the side covers, the oil pump sits between the motor mount and the distributor.
So you have a 194, 230 or a 250.
Your block number is listed as a 230 in the Santucci book, 1966-1970
And I have the same number on my 1970 230.
So you have a 230.