Just ran my 511 build numbers thru Dynomation5. 654hp/627tq. I think that's probably real close by the feel of it compared to my 590hp 408 I had. This program was real close with my SB build. Was hoping to get 700+ on pump gas. Looks like compression and more cam will be in order. 511 with E victor max wedge heads with solid flat tappet currently.