[oletrucks] Different 6 cylinder head square port design

["joe" <chevy1@jps.net>]

I have someone contacting me regarding an aluminum square port manifold with
a 4 barrel carburetor the owner say's will fit a 6 cylinder 235 but on
examining their port design on their 235 "1954" it's round and smaller.

Is the square port for the better design 235 head or is it for a 250 CID
engine?

Joe
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959