Blew it up need sugistions

Is that the RB kit? I would not go that large in the B block. It's killer, but short lived IMO. That 512 is for a .060 over bore. This should not be done. I would sonic test any block for a project like that, and start at std bore. With a .030 overbore the kit is really a 505 :). If you are going with a cam of that design anf that size, bush the lifter bores and I would not go MW size, I would have the std port window CNC ported by Jeff at Modern Cylinder Head in MI. He has a killer program for them, and the intake choices are much better. Also, make sure the rods are correctly cycled and then checked for roundness, and the crank is inspected carefully for taper. The rods will need work, and they will need the pin bores honed for the pins to fit properly. (no, dont use emery like Brandon says) and have your shop balance the assembly properly.