Originally Posted by CNC-Dude
Dad, we just used flat tops in the 250 we did all the dyno tests with, so that should put you right on the mark for the needed compression and HP level you are looking for. Clay Smith, Isky and a few others have a good selection of flat tappet cams for these engines. Tom Lowe also manufactures his own brand of intake manifolds for these engines, PES, and has a matching set of "lumps" to match. This combo is 40 HP better than the Clifford intake with any other brand of "lumps", so that will give you a big boost right there if you choose to use it.
CNC-DUDE, I want to thank you for all the info, shows you never get too old to learn, I'm glad I found this site and joined it. When we get started on this , I will post as we go to let others know what we do and how it turns out, thank you very much, Dad