340Help!!

There could be several reasons why the cam went, if it did. The first one that comes to mind is did it fire instantly when you went to start it the first time? Or did you turn it over and over to get fuel and oil pressure? It's critical that the engine fire the instant you turn the key, and that you have the systems ready for it to run for 20 minutes over 1800rpm to break the cam in. So, did you? There is also the possibility that the lifter bores are not in alignment, or that the oil you're using wasn't enough, or the springs aren't set up properly and there's not enough pressure. That cam is fairly mild, and I run it and it's smaller brothers on standard oil (no additives). Also, on it being doggy, yes, the carb is big, but if the timing is set at zero, that's why it's a dog. You need to learn how to properly set up the ignition curve, and add about 16° of initial timing. You'd be amazed what that will do...