I have a question concerning the casting for the rocker arm bolts in the runners of the lt1 heads.


Can I smooth those out and if I were to poke through and reach the threaded hole for the rocker stud would this cause an issue.


For example, I have this going on.........







And was wondering if I could do this...................










I am thinking a thread sealant on the rocker studs would stop any vacuum leaks, but I am just looking for some second opinions

 

That is common when dealing with these castings.