[MR DERBY CITY]

I have seen this happen too many times over the years with production 305 blocks. He or anyone can hone it again but chances are very high that it won’t seal. Bow tie blocks /dart little M blocks are the only remedy to this situation.Unfortunately no one will sell their performance blocks. Another option would be to sleeve a 307 or 350 block. That would be a viable option. To continue to spend money on a production block is not very wise. All in all, I do wish you luck with your racing endeavor …