Just wonder why Buick owners only use 322 to lockate parts ,there are a lot of different parts on 322 from 1953 to 1956!!!!!!!!!!!! Use the year and model too,to get the right parts for your 322 engine!1953=164Hp 1954 =182Hp 1955=236Hp 1956 255 Hp of course there must be some parts that are different.
http://www.buicks.net/shop/reference/nailhead_casting_numbers.html
Leif in Sweden.