You know when building a street 400ci chevy from a street block you should drill 6 steam holes in the heads to match those on the block..???
Well, what are you supposed to do with a Bow-Tie 400ci-type block ??(GM10051184) (where there are no steam holes in the block between siamesed bores anyway ..)
I guess the block was designed to be travelling at speeds above 3500rpm all the time so you always had enough circulation to avoid needing these holes..Should I drill holes in the block & the heads using a gasket as a template..??
Help..!!??? - (I am building a 434ci smallblock motor - mostly street performance use.....)