Quote Originally Posted by Screwby View Post
Ok got a SBC 383 stroker.....
I dont want to be like all those other cats and over carb. I have too many conflicting opinions. (I know EFI ASAP!!! Maybe next year) Just some help from some guys that have been there is whats needed. Many Thanks in advance.
Morning Screwby, It's good to see you here and welcome to the club.

The old rule of thumb for CFM of car was twice the cubic inches. If you wanted to make things more responsive ( and you weren't trying to squeeze every last HP) then you went down to the next closest number available.

So 383 x 2 = 764 (next closest number will be 770)
for a street motor I'd prefer 700, it'll usually be "crisper" and more responsive.