the master tech continues to try while failing again, to argue about what he thinks he knows, clearly subjects beyond his experience, over his head and above his pay grade!
My engine builder as well as many other nationally known engine builders install 3/8" 1 piece pushrods in the conventional headed BBC super class and bracket engines making upwards of 1100HP!
NO head rubbing, NO witness marks, NO broken pushrods on my current engine seeing 8000 in the lights every weekend, 36 weekends a season for the past 5 seasons, or my previous engine for 17 seasons! Not 1 broken pushrod in 22 years and over 5000 passes racing conventional headed BBCs with 3/8" pushrods!!!