Here is also one link to one of the books on Amazon-
The block is the same- Same bore, different stroke, so different crank. The early 327s had a smaller main diameter, but newer matches the dia of the 350. A lot of interesting history and compatability to look at if you are interested.
oops, While I'm typing away, Kevin wrote the appendix to all of the books that I have... WOW! Good data, Kevin.