Originally posted by DeuceCoupe:
Rochester B, BC, BV is a great Carb!
THey will sit for weeks, months, YEARS, just dump a little gas in and it runs again, just like before!
There are (at least) 3 sizes of the B/BC/BV.
Here they are with my estimate of CFM using the "4-barrel" rating of 1.5 in Hg:
By Primary Venturi size:
1-1/16: 100cfm
1-11/32: 150cfm
1-9/16: 200cfm
I'd use two of the middle size.
The large size is almost like 1/4 of an 850 Holley double pumper - not the most responsive setup if they both opened at once. Middle size is responsive but 2 of them are still big enough to feed the 170hp or so you should make! 
////////////////////////////////////////////////////// do i measure from the top of carb or the bottom for those measurements. wich one is best b,bc ,bv style
