Carb recommendations???

Just a heads up before I proceed, I corrected the formula I posted for you above,
I should know better than to fire off something like that when dog tired lol!! You'll find
the corrected one to work perfectly.
The primary reason to correct the depression. is to illustrate to the inexperienced
that a 500cfm holley 2bbl actually flows less air than a 390cfm holley 4bbl, so that they
choose wisely. 1bbl holleys were rated @3"Hg ,model 1940 came in three basic sizes,
170-180-&212cfm ratings. There were also versions 1945-203,and 1946-200. If you
were to put four of the model 1946s together they would have a combined rating of
800cfm@3"Hg, however in reality compared to a "real" 800 holley, they only flow566.
A 1946 could theoretically flow 516cfm using that mindset, but there would have
to be a 20"Hg drop across it, and at that velocity I doubt it would actually obtain that#.
Not to mention the engine would've quit climbing so far back you'd hafta to read about
it in a history book. Picking a carb for streeting around w/relatively avg. heads means
conservative choices,that would mean a 2bbl, or vac secondary390. Others have used
the 500avs with good results,I think that leaves room for stepping up w/o much down-
side.