The C5R block is rated at 900 HP. The ERL Super deck block has been successfully tested to 1600 HP!... And I think it can handle more than that. The jury is still out on the Warhawk blocks so I'll skip those for now. The GM LSX block is a cast iron pig so I don't want anything to do with those for a sand rail engine... I'll wait for the aluminum version to come out...
This will be a long term project that will start when I get into the new shop... I just don't have the room or time right now. And I have one more project that needs developing but I've already started my build sheet for this project... Should be interesting.
Till then,
Zilla