I have heard that the '67 2 bolt block is the best out there in terms of overall strength for an engine that bolts into the newer cars with Turbo hydramatics without issue.
Just curious your opinion on this. Would installing short bolts with loctite in those open holes help the durability of the block? Never had an issue with my 2 bolt larger main 455 in my own car, but it is only at about 450 hp level. This person plans on adding a stroker kit to make a 461 out of it. He has a two bolt '69 grand Prix 400. I told him that would be a little bit better choice for a stroker kit. (The GPs engine did not have the outer bolt holes). He is also considering line boring it and adding Milodon main caps. The car has a 4 speed and drives it pretty hard. Thanks Tom for any input you may have.