350 heads will bolt to the 400 block. They will need to be drilled for the "steam ports" in the 400 block.
305 heads of course, 350 heads will fit for sure and possibly 400. obviously no big block heads will fit. a 305 with 400 heads gets you a little over 352. 350 with 400 heads is a 383. add and divide
a 350 is a small block those heads will fit on and Chevy SMALL block not a big block
They dont make a 350 big block.The big block starts at 400. Wrong! 400 is still a smallblock. Big block Chevys start at 396, but does not include the 400, which the heads/crank and starter/etc. fit on the 350/305 etc.
No.
the heads should fit as long as your not trying to put them on a big block
yep
Yes.
no they will not
no
== ==
yes they will bolt right on.
No way,Inpossible