HP #'s are just that, just #'s, only way to get those is calculating Torque and RPM ! In the case of making Huge HP #'s with ANY SB, you are going to have to turn RPM and this where the SB's always ran into problems, not that they can't or won't do it but they will not live doing it. The blocks crack in the front main webs because of the iron missing where the oil passages are drilled out. That very reason is why 340's are as hard as they are to find mostly. At least ones that are not cracked. Many people don't even realize their blocks are cracked there. People destroyed them building them to turn too many RPM's. For all the factory did to make them so good at making HP, they dropped the ball in the oiling design. If I could only get ahold of a block that had not had the front passages drilled?
