"I know of a guy that built a SBM with over 20psi, stock block & Crank that wound it up to over 7K and made over 900HP at the wheels. It lived no problem for a very long time. It is all in the tune."
Nothing ever did fail. When the engine was torn apart. The crank was bent. This engine seen at least 300 1/4 mile runs and a bunch of street miles which is a heck of alot more than most get out of an engine.
