Its all because of the valley and main girdle too, right? haha. It will break, without a doubt. IF it made 1100hp it is the highest stock block number, and the only one to survive that long. Normally they break around 600rwhp, they never last above 800, ESPECIALLY with a supercharger. Find 2 more making that much power for any amount of time and you'll have something.
And valley girdles dont do a fucking thing. The blocks are weak, the girdle will hold the halves together after it cracks.