To drill or not to drill steam hole in 400
I am getting different feed back from folks about whether of not I should drill the steam holes in the new heads I just purchased. I bought a set if heads from Jegs (world sportsman). I have spoke to a friend of mine whom has built several small block chevy 400 and he stated that he has never drilled the steam holes out on his 400's and it they have never ran hot.
Are there any pros out there on sb chevy 400 that can give me some insight before I put this thing together