Comp XE268H v Crow 18619 - 318

I would use the Comp cam definitely but use solid flat lifters. I use Trend H-13 solid lifters and love them, a little costly though but will worth the money to me. They have many advantages, mainly 68+- gram weight. p-rods run in the lower lower half of the lifter and they have a hellava radius on the face you can easiy see with the naked eye. You will need longer P- Rods. I use Trend PRods also. The comp 268S is an excellent choice and will pull like a raped ape to almost 6200. I only run a xs274S in my 512 lowdeck. Don't use more spring that needed, just watch your tach. Good luck to you. Oh yeah, run the longest p-rods you can fit. I find thes extreme energy cams tune very easy.