As Dave posted, it depends upon the year, but, apparently, not on the engines within a given year (216s and 235s in the same years apparently used the same tube/stick):

Making a blanket statement about 235 engines is misleading (and usually wrong): 235 engines were available from 1941-62 and had a variety of differences between 53 and 55.

http://chevy.oldcarmanualproject.com/1929_57chevyparts/57cmpc0186.htm

1.516: "gauge" rod lengths are shown separate from the tube lengths. Also, see the note at the bottom/end of that section (for trimming the stick/rod/"gauge").