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

I made over 600hp using a Magnum block. I got a 6psi of boost and add a 150 shot of nitrous. The engine was together for many years. The #7 piston skirt failed filling the pan with debris. 3800 pound Dodge Mirada, 10.6@128mph, street 275/60/15 tires.