Sorry Tim, I got interrupted.
Studs also have other advantages. The torque on a bolt only applies about 10% of it's force to clamping. The other roughly 90% is used up overcoming friction (thread engagement, bolt twist, ect). Studs not only apply way more clamping force, but the torque values are way more accurate due to the fine thread for the nut and quality of the machining. That increase in clamping force helps stabilize the block. In many cases crank walk can be completely eliminated using studs.
In some oval track classes where OEM blocks are required studs make a huge difference. The additional clamping force and destressing of the block not only let the block live longer, but can help a cast crank(lighter weight) live. Most crank failures have nothing to do with the crank. It's the block flexing that wipes the crank out. When people use a forged crank they usually don't realize that the benefit is that a forged crank can flex better than a cast crank.
