<VV> Venturi Cluster Selection

[Grant Young]

All venturi clusters for 1965 and later have 29338 on them, but this is pretty 
much useless as there are about 15 different ones with the same number. 
140 clusters have the largest of the idle tube restrictors, so pick two
matched big ones for your application. I know from experience that just
about any clusters (mixed or not) will "work", but for optimum performance
and ease of adjustment, matched is obviously better. Your secondary carbs
will use the same number but without the idle tubes being present.
The Carbmeister