I would not recommend a hydro cam for what you want, but I can throw you a bone on a solid FT cam....My 408 uses an off the shelf Hughes solid flat tappet (HUG STL6468AS), 264/268 @0.05. This along with ported Edelbrocks, Victor intake, 13:1 compression, and dinky 750 e85 carb, 727 trans with 8" converter, 4.10 gears..... runs 10.1x @ about 131mph in my 3250# Barracuda (probably close to 600hp, but I never dynoed it). It will go a little faster when I get the kinks worked out on my bigger e85 carb, probably 10.0x (hopefully this spring).