[mrtexas]

Originally Posted by WestCoast

head studs are much better for some softer metals, such as cast iron and aluminum ,these metals wont take much twisting torque when tightening, the threads will be stripped or pulled out, its best to use these with nuts because the torque is applied in a straight line with out being screwed in, and yes bolts can be used in place of studs but not a good idea

I guess that is why all small block Chevy have studs?