I was wondering the same thing when skimming thru this thread
earlier Jerry.
Didn't want to say anything since I don't have a 216 and 235
cam in the shop to compare.
It would be interesting to see how the lobes compare side by
side and whether the locations are the same distance for the
bearing journals. If you ground that much off you now doubt
would be thru the case and it would have to be re-heat treated
once you had it roughed in.
Wish I had all the time in the world to play with something
like that. When a part becomes extinct that's when it draws
my attention.
dg