I picked up a dual vacuum / fuel pump for my 1950 with a 235. I Is the vacuum side on the top or bottom. I'm thinking the smaller top side is he vacuum side. The picture shows what I'm referring to the small side is on the bottom but it will be on top when installed.
http://autopartsobsolete.smugmug.com/Autoparts/120713-1/i-ZFBDW9X/0/O/DSCN0259.jpg

Last edited by Bicounty; 05/03/2016 2:18 AM.