Max overbore for LA 340 block? .060" too much??

Something else to bear in mind when overboring an engine, with time and water jacket corrosion, thin bore walls will flex and allow increased blowby. Thus bleeding off precious horsepower. I've read of motors which (All other factors being eqaul) were able to make more horsepower with the standard or smallest overbores, than when taken right out. Albiet they weren't mopar engines. But it does make you think. An Iron block isn't as rigid as some might think.