Are you aware that you just contradicted everything you were saying about the 1/2 shank stud being weak at the shank in earlier posts. You said that grove cut it the shank made it weak. But now you are saying they could make a 1/2" thread with a 7/16 shank and it would hold up.
The stud measures .510 at the shank. and the ARP bolt Measures .440 at the shank. The Hole in and Edelbrock head I just measured is .530 so the bolt gives .045 clearance for oil per side. the stud gives .010 per side.
He is cutting at .070 groove in the stud with a balled end mill That is .440 left . Thats a lot of material left on the stud . More then a bolt. Because it is not the total diameter cut. And confidence that the oil is not blocked off.
