Studs in street engines--------------Studs are a good idea in any engine, especially a used core or block that has been lying around getting rusty--A stud will pull evenly on all the threads instead of winding and twisting as a bolt is tightened-----They also allow you to use a quality nut as an economic way to rebuild and have new threads instead of reling on some questional threads of a bolt or block---


However, the choice of the proper length and thickness of the stud/nut/washer does get touchy under the oil pump /main cap of some engines that fasten the pump to the main cap-----------A late model hemi is the way to correctly remedy this particular case----------