**600hp sbm block limit? Or is it bs!!**

we ran many 340 blocked 358 motors back in the late 70s early 80s all pushing over 750hp on dirt with a two barrel carb. on alcohol had all kinds of failures rods cranks and pistons don't remember any block failures.some were TA blocks some were 4 bolt some not..BUT I KNOW all racing engines are going to the same place just some get there sooner than others.....Artie