350 small block

i have a freshly machined 350 4 bolt main with flat top hyperutectik pistons and have a set of 305 heads that are 64cc's 194 150 valves. i was waondering if they will work or will the compression be out of control. i talked to several people at summit and they told me that they will work, along with some other machine shops, but the gentlemen at the machine shop that did my block seem to think that they will not work, there are 4 valve reliefs,. tell me what to do ...

Your compression wil be around 9.8:1 depending on whether you have the block decked or not. So, yes they will work

I have the same setup in my formula. You will have no problems, as long as your block & heads have not been decked too much.