Keith, what cc are the chambers on your heads? I see you have flat tops. I'm going to freshen my 408 this winter and am planning on bumping my compression from 10.9 to 11.4 or 5. My heads are milled to 55cc's and my pistons have either 20 or 22cc dish. So I'm planning dropping the dish to 15 or 16cc's to get the compression up. I'll keep the cam, a Hughes flat solid 260/264 @ .050, .628/.633 lift with 1.6 rockers. Nice build BTW.