Unless someone went through a lot of trouble, it is not a 235. As mentioned before, they quite making them in 62. As another mentioned, if the side doors are over 4" then it is a 292. I would suspect it is a 250. There is a engine code by the distributor on the machined area just to the rear of it. You should be able to give that ID# to a dealer and find out what year and cid it is, although I think the year is the first to numbers followed by the first letter. Also you can get the block casting # on the passenger side of the block just under the rear sidedoor, and go here to find what it is. Just to the left of this page you will see a list, click on casting #s and you will probably find a match. Hope this helps.
http://www.inliners.org/ The only problem with block casting #'s is that some 230 and 250 shared the same block. The only difference is stroke and pistons.