I'm building a 1972 Buick 455 carb ( 7042240 ) to the recipe #2 and have a question about the main air bleeds in the main body. The main air bleeds are already .070" in the air horn, but the main air bleeds in the main body are tiny compared to the #2 recipe of .070". They are approx. .015" right now and that seems light years from .070" the recipe calls for.
I like to stick to the motto of "a little at a time" so do I really drill them out from .015" to .070"?
Thanks in advance
Alan